radio galaxies probably have jets that push material away from their nuclei and into surrounding lobes. astronomers think that most radio galaxies have

Answers

Answer 1

Astronomers think that most radio galaxies have high intensity.The radio emission from radio galaxies is synchrotron emission

A radio galaxies is a universe with goliath districts of radio outflow broadening far past its noticeable construction. These vivacious radio curves are fueled by jets from its dynamic cosmic nucleus. They have iridescences up to 1039 W at radio frequencies between 10 MHz and 100 GHz. The radio galaxy is because of the synchrotron cycle.

The noticed design in radio still up in the air by the association between twin planes and the outside medium, adjusted by the impacts of relativistic radiating. The host universe are only enormous curved cosmic systems. Radio-noisy dynamic universes can be recognized at large distances, making them important apparatuses for observational cosmology. As of late, much work has been finished on the impacts of these articles on the intergalactic medium, especially in universe gatherings and groups.

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(Complete question) is:

radio galaxies probably have jets that push material away from their nuclei and into surrounding lobes. astronomers think that most radio galaxies have_______.


Related Questions

Natalie and Landon are at Color Guard practice after school. Natalie exerts a
force of 15.4 N on her baton, causing it to accelerate m/s² into the air.
Landon exerts a force of 15.1 N on his rifle, causing it to accelerate 4.2 m/s²
into the air. If both objects have 260 J of GPE, who threw theirs higher?

Answers

Answer:

Landon threw his rifle higher than Natalie threw her baton.

Explanation:

The gravitational potential energy (GPE) of an object is given by:

GPE = mgh

where m is the mass of the object, g is the acceleration due to gravity, and h is the height of the object.

Assuming that the baton and rifle have the same mass, we can set their GPEs equal to each other:

mgh = mgh

260 J = mgh

Now we can solve for h:

h = 260 J / (mg)

The mass cancels out, so we can use the same height formula for both objects.

For Natalie's baton:

F = ma

a = F/m

Using the given values, we get:

a = 15.4 N / m (since the mass is not given)

Now we can use the height formula:

h = 260 J / (mg)

h = 260 J / (m * 9.81 m/s²) (acceleration due to gravity)

h = 26.53 / m

h = (1/2)at²

h = (1/2)(15.4 N / m)(t²)

Setting the two expressions for height equal to each other, we get:

26.53 / m = (1/2)(15.4 N / m)(t²)

Solving for t, we get:

t = sqrt((2 * 26.53) / (15.4 N / m))

t = 1.41 s

Now we can use the time and acceleration to find the height:

h = (1/2)at²

h = (1/2)(15.4 N / m)(1.41 s)²

h = 15.33 m

For Landon's rifle, we can use the same height formula:

h = 260 J / (mg)

h = 260 J / (m * 9.81 m/s²)

h = 26.53 / m

h = (1/2)at²

h = (1/2)(15.1 N / m)(4.2 s²)

h = 35.77 m

Therefore, Landon threw his rifle higher than Natalie threw her baton.

Hope this helps!

what is the control voltage used by most residential hvac equipment

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The control voltage used by most residential HVAC equipment is 24 volts AC.

In residential HVAC equipment, control voltage is used to regulate the operation of various components. The control voltage is typically a low voltage electrical signal that activates or deactivates motors, valves, and sensors. It is an essential part of the HVAC system, allowing for precise control and efficient operation.

Most residential HVAC equipment uses a control voltage of 24 volts AC (alternating current). This voltage is commonly used because it is safe, efficient, and compatible with the majority of HVAC equipment available in the market. The control voltage is supplied by a transformer that steps down the voltage from the main power supply to the required level for control purposes.

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The control voltage used by most residential HVAC equipment is typically 24 volts AC. Control voltage is the voltage used to operate the controls of an HVAC system.

Most residential HVAC equipment uses 24 volts AC as the control voltage for the thermostat, control relays, and other controls. The control voltage is used to send a signal to the different components of the HVAC equipment to turn on or off or adjust to a certain setting.The 24 volts AC is preferred because it is a safe and low voltage, which can be easily controlled and is not hazardous to people or equipment.

The 24 volts AC is also easy to transform from the primary power source, which is usually 120 or 240 volts AC, by using a transformer that can step down the voltage to 24 volts AC. This makes it easy to install and maintain the HVAC equipment.Overall, the control voltage used by most residential HVAC equipment is 24 volts AC, which is a safe and low voltage that can be easily controlled and transformed from the primary power source.

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true or false? a point that moves along the x-axis with constant, positive acceleration must always be moving from left to right

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The statement is false. Acceleration is the rate at which velocity changes over time, both in terms of speed and direction.

A point or object travelling in a straight path is accelerated if it accelerates or decelerates. Even if the speed is constant, motion on a circle is accelerated because the direction is always changing. The rate of change of displacement is defined as velocity. The rate of change of velocity is defined as acceleration. Because it includes both magnitude and direction, velocity is a vector quantity. Because it is simply the rate of change of velocity, acceleration is likewise a vector quantity. Acceleration is the change in speed or direction of an object. The rate at which velocity varies is defined as acceleration. Keep in mind that velocity has two components: speed and direction.

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If a paper airplane has a forward velocity of 2 m/s, but air resistance has a velocity of 1 m/s acting against the paper airplane, then what is the resultant forward velocity of the paper airplane?

Answers

Answer:

F_{resultant} = 1 [m/s]

Explanation:

These types of problems can be solved by means of relative velocities, where vectors (forces or velocities) are necessarily handled, these velocities depending on the velocity are added or subtracted.

Forces to the right are taken as positive and negative to the left.

\(F_{velocity}-F_{air}=F_{resultant}\\2-1 = F_{resultant}\\\\F_{resultant} = 1 [m/s]\)

an asteroid falls from the sky and hits the surface of mars. which undergoes the greater change in momentum during the time of contact?

Answers

Even at this speed, the kinetic energy of a meteoroid produces around 15 times more energy than an equivalent mass of chemical explosives like TNT.

What, an asteroid falls from sky, hits the surface of Mars?

In Earth's atmosphere, almost all the material is vaporized, leaving a dazzling trail that is affectionately referred to as “shooting stars.” On an average night, one can view many meteors each hour. Meteor showers are occasions where the number suddenly and rapidly increases.

This kinetic energy is transformed into heat as the meteoroid slows down as it comes into contact with the gas molecules in the atmosphere.

Therefore, This kinetic energy is transformed into heat as the meteoroid slows down as it comes into contact with the gas molecules in the atmosphere.

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Look up the radius and mass of the Moon. Using this information to calculate the acceleration of gravity on its surface. If a person weighs 120 lb on Earth, how much does he/she weigh on Moon?

Answers

A person who weighs 120 pounds on earth would weigh approximately 20 pounds on the moon. This is because the force of gravity is weaker on the moon due to its lower mass and smaller size. The radius of the moon is about 1,737 km (1,080 miles) while its mass is approximately 7.342 × 10²² kg (81 billion tons).

Using this data, we can calculate the acceleration of gravity on the moon's surface which is about 1.62 m/s².A person who weighs 120 pounds on earth would weigh approximately 20 pounds on the moon.

Here's how to calculate the acceleration of gravity on the moon's surface:G = GM / R² where G is the acceleration of gravity, M is the mass of the moon, and R is the radius of the moon.

We know that M = 7.342 × 10²² kg and R = 1,737 km = 1,737,000 meters so we can plug in these values to find G.G = (6.67 × 10⁻¹¹ N(m/kg)²) (7.342 × 10²² kg) / (1,737,000 m)²G = 1.62 m/s²

Therefore, the acceleration of gravity on the moon's surface is 1.62 m/s².

A person who weighs 120 pounds on earth would weigh approximately 20 pounds on the moon. This is because the force of gravity is weaker on the moon due to its lower mass and smaller size.

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Observe the given figure and find the the gravitational force between m1 and m2.​

Observe the given figure and find the the gravitational force between m1 and m2.

Answers

Answer:

The gravitational force between m₁ and m₂, is approximately 1.06789 × 10⁻⁶ N

Explanation:

The details of the given masses having gravitational attractive force between them are;

m₁ = 20 kg, r₁ = 10 cm = 0.1 m, m₂ = 50 kg, and r₂ = 15 cm = 0.15 m

The gravitational force between m₁ and m₂ is given by Newton's Law of gravitation as follows;

\(F =G \cdot \dfrac{m_{1} \cdot m_{2}}{r^{2}}\)

Where;

F = The gravitational force between m₁ and m₂

G = The universal gravitational constant = 6.67430 × 10⁻¹¹ N·m²/kg²

r₂ = 0.1 m + 0.15 m = 0.25 m

Therefore, we have;

\(F = 6.67430 \times 10^{-11} \ N \cdot m^2/kg \times \dfrac{20 \ kg\times 50 \ kg}{(0.1 \ m+ 0.15 \ m)^{2}} \approx 1.06789 \times 10^{-6} \ N\)

The gravitational force between m₁ and m₂, F ≈ 1.06789 × 10⁻⁶ N

What is the de Broglie wavelength for an electron with speed v1 = 0.479 c ? (Hint: Use the correct relativistic expression for linear momentum if necessary.) What is the de Broglie wavelength for an electron with speed v2 = 0.964 c ? (Hint: Use the correct relativistic expression for linear momentum if necessary.)

Answers

The de Broglie wavelength for an electron with speed v1 = 0.479 c is 1.60 x 10^-12 m and for an electron with speed v2 = 0.964 c is 5.14 x 10^-13 m.

The de Broglie wavelength (λ) of an electron can be calculated using the formula λ = h/p, where h is the Planck's constant and p is the momentum of the electron.

For a non-relativistic electron with speed v1 = 0.479 c, we can use the classical formula for momentum, p = mv, where m is the mass of the electron. Thus, p = m*v1 = (9.11 x 10^-31 kg) * (0.479 c) = 4.15 x 10^-22 kg m/s.

Using this value of momentum, we can calculate the de Broglie wavelength as λ = h/p = (6.626 x 10^-34 J s)/(4.15 x 10^-22 kg m/s) = 1.60 x 10^-12 m.

For a relativistic electron with speed v2 = 0.964 c, we need to use the correct relativistic expression for momentum, which is p = m*v2 / √(1 - v2^2/c^2). Plugging in the values, we get p = (9.11 x 10^-31 kg) * (0.964 c) / √(1 - (0.964 c)^2/c^2) = 1.29 x 10^-20 kg m/s.

Using this value of momentum, we can calculate the de Broglie wavelength as λ = h/p = (6.626 x 10^-34 J s)/(1.29 x 10^-20 kg m/s) = 5.14 x 10^-13 m.

Therefore, the de Broglie wavelength for an electron with speed v1 = 0.479 c is 1.60 x 10^-12 m and for an electron with speed v2 = 0.964 c is 5.14 x 10^-13 m.

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The de Broglie wavelength for an electron with speed v₁ = 0.479c is λ₁ = 2.31 × 10⁻¹⁰ m. The de Broglie wavelength for an electron with speed v₂ = 0.964c is λ₂ = 1.15 × 10⁻¹⁰ m.

Determine the de Broglie wavelength?

The de Broglie wavelength is given by the equation λ = h/p, where λ is the wavelength, h is the Planck's constant, and p is the momentum of the particle.

In the case of relativistic speeds, we need to use the relativistic expression for linear momentum, which is p = mv/√(1 - v²/c²), where m is the mass of the particle, v is its velocity, and c is the speed of light.

Using this expression, we can calculate the momentum for each electron. For v₁ = 0.479c, the momentum is p₁ = 0.759mv, and for v₂ = 0.964c, the momentum is p₂ = 1.78mv. Substituting these values into the de Broglie wavelength equation, we find the corresponding wavelengths.

For v₁ = 0.479c, λ₁ = h/(0.759mv), and for v₂ = 0.964c, λ₂ = h/(1.78mv). Plugging in the values of Planck's constant (h) and the electron mass (m), we can calculate the wavelengths λ₁ and λ₂, which are approximately 2.31 × 10⁻¹⁰ m and 1.15 × 10⁻¹⁰ m, respectively.

Therefore, the de Broglie wavelength of an electron moving at a speed of 0.479c is 2.31 × 10⁻¹⁰ m, while for a speed of 0.964c, it is 1.15 × 10⁻¹⁰ m.

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Calculate the minimum frequency of ultrasound that will allow you to see details as small as 0.802 mm in human tissue. (Assume the speed of sound through human tissue is 1540 m/s.)

Answers

Answer:

the minimum frequency of ultrasound that will allow you to see the details is 1.92 x 10⁶ Hz.

Explanation:

Given;

wavelength, λ = 0.802 mm = 0.802 x 10⁻³ m

speed of sound in human tissue, v = 1540 m/s

The minimum frequency of ultrasound that will allow you to see the details is calculated as;

\(f = \frac{v}{\lambda} \\\\f = \frac{1540}{0.802 \times 10^{-3}} \\\\f = 1.92 \ \times \ 10^6 \ Hz\)

Therefore, the minimum frequency of ultrasound that will allow you to see the details is 1.92 x 10⁶ Hz.

there is a theory of physics called the standard model. it makes predictions about elementary particles. it has been used to make many many true predictions. it is a very good theory. physicists used that theory to predict the mass of the higgs boson. physicists believed that their theory gave the right prediction. that said, the mass of the higgs boson was different from what they believed. why did the physicists lack knowledge about the mass of the higgs boson?

Answers

Although the Standard Model predicted the mass of the Higgs boson accurately, the physicists lacked knowledge of the exact value because they failed to have a true belief about the mass of the Higgs boson.

The Higgs boson is a subatomic particle that is believed to play a crucial role in the process by which the universe formed. It was first proposed in the 1960s by a British physicist named Peter Higgs, who suggested that a particle like the Higgs boson must exist in order to explain how the universe acquired mass. The Higgs boson is also known as the "God particle," a nickname that has been used to describe it because it is believed to be responsible for giving mass to all other particles in the universe. The Higgs boson is one of the most important discoveries in particle physics, and it has led to a better understanding of the fundamental forces that govern the universe.

The physicists lacked knowledge about the mass of the Higgs boson because they failed to have a true belief about the mass of the Higgs boson. According to the theory of physics called the standard model, the physicists believed that their theory gave the right prediction but the mass of the Higgs boson was different from what they believed.

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How do I find the summation fo Fx and summation of Fy without knowing variables?
As well as ax and ay?
Example:

Answers

By resolving forces into their components and adding them together, you can determine the resultant force in the x and y directions without knowing the actual variables involved.

To find the summation of Fx and summation of Fy without knowing the specific variables, you need to have information about the forces acting on an object in the x and y directions. If you have the magnitudes and directions of individual forces, you can use vector addition to determine the resultant force in each direction.

Here's a general approach to finding the summation of Fx and Fy:

Identify the forces: Start by identifying all the forces acting on the object and their directions. Each force can be represented as a vector with a magnitude and direction.

Resolve forces: If the forces are not already given in the x and y directions, you need to resolve them into their x and y components. Use trigonometry (sine and cosine) to determine the components of each force along the x-axis (Fx) and the y-axis (Fy).

Sum the components: Add up all the individual components of forces acting in the x-direction to find the summation of Fx. Similarly, add up all the individual components of forces acting in the y-direction to find the summation of Fy.

Summation of Fx = F1x + F2x + F3x + ...

Summation of Fy = F1y + F2y + F3y + ...

Combine components: If there are forces acting at an angle to the x and y axes, you can use the Pythagorean theorem and trigonometry to find the resultant force in each direction.

Summation of Fx = √(F1x^2 + F2x^2 + F3x^2 + ...) (taking into account both magnitudes and directions)

Summation of Fy = √(F1y^2 + F2y^2 + F3y^2 + ...) (taking into account both magnitudes and directions)

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what are contact force and non contact force give example​

Answers

Explanation:

Force is push or pull on a body.

Contact force is a force that requires contact. It acts between two body that touches on another.

Examples are pushing a car, ringing a bell, kicking a ball.

Non contact forces are forces applied to another object without contact. The action of this force is usually through a targeted force field.

Examples are magnetic force, gravitational force

A soccer ball is moving horizontally at a speed of 4.0 m/s. It then undergoes a constant acceleration. After 8.00 s, the ball is moving at 4.8m/s. What is the ball's displacement?

Answers

Answer: 0.0 m/s

Explanation

Q1) An average force of 50.0 N is exerted on a 4.0-kg cart for 2.0 seconds.
a. What is the impulse?
b. What is the change in momentum?
c. What is the mass's change in velocity?

Answers

Ixt= mv
a) 50x2= 4v
100= 4x25
impulse =100
v=25

The impulse on the 4 kg cart is 100.0 Ns, the change in momentum is 100 kgm/s, and the change in velocity is 25.0 m/s.

What is Impulse?

Impulse is a term which is used to describe or quantify the effect of forces which are acting over time to the change in the momentum of a moving object. Impulse is represented by the symbol J and is expressed in Newton-seconds or kg m/s.

The impulse on the 4 kg cart is:

The impulse I = F × t

where, F =average force = 50.0 N and

t = time = 2.0 s

Substituting these two values into the equation, we get

I = F × t

I = 50.0 N × 2.0 s

I = 100.0 Ns

The impulse is 100.0 Ns

The change in momentum of the cart will be equal to:

Since, change in momentum Δp = I

where, I = impulse

Since I = 100.0 Ns,

Substituting this into the equation, we have

Δp = I

Δp = 100.0 Ns

Δp = 100 kgm/s

The Mass's change in velocity will be:

Change in velocity = 25.0 m/s

Since, the change in momentum Δp = mΔv

where, m = mass = 4.0 kg and

Δv = change in velocity

Δv = Δp/m

Substituting the values of these variables into the equation, we have

Δv = Δp/m

Δv = 100.0 kg m/s / 4.0 kg

Δv = 25.0 m/s

Therefore, the change in velocity is 25.0 m/s

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Magma presses against limestone creating pressure. Over time it turns into marble. What am I?

Metamorphic

Igneous

Sedimentary

Answers

Answer:

Metamorphic

Explanation:

Metamorphic rocks form when rocks are subjected to high heat and high PRESSURE.

Natural Resources Question 5
Which statement describes an advantage of using renewable
resources?
Select one
-They make energy more affordable
-They will increase the demand for electricity
-They will be available for many years.
-They make electricity less dangerous.

Answers

Answer:

-They will be available for many years.

Explanation:

The advantage of using renewable resources is that they will be available for many years.

Renewable resources have very fast turn over time for replenishing, therefore, they are available over an extended period time.

They are not used by consumption and so they will continually be available. This is different from the non-renewable resources which are depleted as they are being used up.

Examples of renewable resources are wind, water and air

The heat loss from a boiler is to be held at a maximum of 900Btu/h ft2 of wall area. What thickness of asbestos (k= 0.10 Btu/h ft ℉) is required if the inner and outer surfaces of the insulation are to be 1600 and 500℉, respectively? Now if a 3-in.-thick layer of kaolin brick (k= 0.07 Btu/h ft ℉) is added to the outside of the asbestos, what heat flux will be result if the outside surface of the kaolin is 250℉? What will be the temperature at the interface between the asbestos and kaolin for this condition?

Answers

Answer:

a. 0.122 ft b. -70 Btu/h ft² c. 633.33 °F

Explanation:

a. Since the rate of heat loss dQ/dt = kAΔT/d where k = thermal conductivity, A = area, ΔT = temperature gradient and d = thickness of insulation.

Now [dQ/dt]/A = kΔT/d

Given that [dQ/dt]/A = rate of heat loss per unit area = -900Btu/h ft², k = 0.10 Btu/h ft ℉(for asbestos), ΔT = T₂ - T₁ = 500 °F - 1600 °F = -1100 °F. We need to find the thickness of asbestos, d. So,

d = kΔT/[dQ/dt]/A

d = 0.10 Btu/h ft ℉ × -1100 °F/-900Btu/h ft²

d = 0.122 ft

b. If the 3 in thick Kaolin is added to the outside of the asbestos, and the outside temperature of the asbestos is 250℉, the heat loss due to the Kaolin is thus

[dQ/dt]/A = k'ΔT'/d'

k' = 0.07 Btu/h ft ℉(for Kaolin), ΔT' = T₂ - T₁ = 250 °F - 500 °F = -250 °F and d' = 3 in = 3/12 ft = 0.25 ft

[dQ/dt]/A = 0.07 Btu/h ft ℉ × -250 °F/0.25 ft

[dQ/dt]/A  = -70 Btu/h ft²

c. To find the temperature at the interface, the total heat flux equals the individual heat loss from the asbestos and kaolin. So

[dQ/dt]/A = k(T₂ - T₁)/d + k'(T₃ - T₂)/d' where  [dQ/dt]/A = -900Btu/h ft², k = 0.10 Btu/h ft ℉(for asbestos), k' = 0.07 Btu/h ft ℉(for Kaolin), T₁ = 1600 °F, T₂ = unknown and T₃ = 250℉.

Substituting these values into the equation, we have

-900Btu/h ft² = 0.10 Btu/h ft ℉(T₂ - 1600 °F)/0.122 ft + 0.07 Btu/h ft ℉(250℉ - T₂)/0.25 ft

-900Btu/h ft² = 0.82 Btu/h ft ℉(T₂ - 1600 °F) + 0.28Btu/h ft ℉(250℉ - T₂)

-900 °F = 0.82(T₂ - 1600 °F) + 0.28(250℉ - T₂)

-900 °F = 0.82T₂  - 1312°F + 70 °F - 0.28T₂

collecting like terms, we have

-900 °F + 1312°F - 70 °F = 0.82T₂   - 0.28T₂

342 °F = 0.54T₂

Dividing both sides by 0.54, we have

T₂ = 342 °F/0.54

T₂ = 633.33 °F

The thickness of asbestos required is 0.122 ft.

The heat flux will be -70 Btu/h ft²

And the temperature of the interface is 633.33 °F.  

(i) the rate of heat loss :

dQ/dt = kAΔT/d

where k = thermal conductivity, A = area, ΔT = temperature gradient, and

d = thickness of insulation.

[dQ/dt]/A = kΔT/d

Given that [dQ/dt]/A = rate of heat loss per unit area = -900Btu/h ft²,

k = 0.10 Btu/h ft ℉,

ΔT = 500 °F - 1600 °F = -1100 °F

We have to find the thickness of asbestos that is d.

d = kΔT/[dQ/dt]/A

d = 0.10 Btu/h ft ℉ × -1100 °F/-900Btu/h ft²

d = 0.122 ft is the thickness required.

(ii) a 3-in thick Kaolin is added to the outside of the asbestos

outside temperature of the asbestos is 250℉,

the heat loss due to the Kaolin is:

[dQ/dt]/A = k'ΔT'/d'

k' = 0.07 Btu/h ft ℉(for Kaolin), ΔT' = T₂ - T₁ = 250 °F - 500 °F = -250 °F and d' = 3 in = 3/12 ft = 0.25 ft

[dQ/dt]/A = 0.07 Btu/h ft ℉ × -250 °F/0.25 ft

[dQ/dt]/A  = -70 Btu/h ft²

(iii) temperature at the interface

the total heat flux :

[dQ/dt]/A = k(T₂ - T₁)/d + k'(T₃ - T₂)/d'

where  [dQ/dt]/A = -900 Btu/h ft²,

k = 0.10 Btu/h ft ℉  (for asbestos),

k' = 0.07 Btu/h ft ℉  (for Kaolin),

T₁ = 1600 °F and T₃ = 250℉.

-900 = 0.10(T₂ - 1600 °F)/0.122 + 0.07(250℉ - T₂)/0.25

-900 = 0.82(T₂ - 1600 °F) + 0.28(250℉ - T₂)

-900 °F = 0.82(T₂ - 1600 °F) + 0.28(250℉ - T₂)

-900 °F = 0.82T₂  - 1312°F + 70 °F - 0.28T₂

-900 °F + 1312°F - 70 °F = 0.82T₂   - 0.28T₂

342 °F = 0.54T₂

Dividing both sides by 0.54, we have

T₂ = 342 °F/0.54

T₂ = 633.33 °F

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Explain why the moon goes through phases.

Answers

As the moon circles around Earth, the phases vary, and various parts of the moon's illuminated surface are visible from Earth. As a result, the moon's appearance changes from night to night from Earth's perspective.
The moon goes through phases because since the Moon orbits Earth, whatever position the moon is, the Sun lights up different parts of the moon causing the moon to look different every phase. The moon reflects sunlight rather than producing any of its own lighting. The changing phases are brought about by differences in the angle at which the sun's rays hit and effect the moon's surface as it revolves around the Earth.

Please help me out!!!!

Please help me out!!!!

Answers

45 J because the initial and the final energy must be the same for the isolated system. Option A

Does energy change in an isolated system?

In an isolated system, the total amount of energy remains constant. This is known as the law of conservation of energy, which states that energy cannot be created or destroyed, only transformed from one form to another.

Therefore, the energy within an isolated system can change forms, but the total amount of energy within the system remains constant. This is the reason why we have said that the energy of the system would remain 45 J

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A space shuttle travels around the Earth at a constant speed of 28000 kilometers per hour. If it takes 90 minutes to complete one orbit, how far is its journey around Earth?​

Answers

42000 kilometers

Explanation:

distance is velocity × time

28000 ×1.5

42000

remember to match units

thats why i wrote 1.5 hours instead of 90minutes

A truck pulls a trailer on a flat stretch of road. The forces acting on the trailer are
the force due to gravity (250 000 N downward), the force exerted by the road
(250 000 N upward), and the force exerted by the cable connecting the wailer to
the truck (20 000 N to the right). The forces acting on the truck are the force due to
gravity (80 000 N downward), the force exerted by the road (80 000 N upward), the
force exerted by the cable (20 000 N to the left), and the force causing the truck to
move forward (26 400 N to the right).

Answers

The net vertical force on the trailer is 0, while the net horizontal force on the trailer is 20,000 N to the right.

The net vertical force on the truck is 0, while the net horizontal force on the truck is 6,400 N to the right.

The given parameters;

the trailer:

force on the trailer due to gravity, Fg = 250,000normal force on the trailer due to the road, N = 250,000 Nhorizontal force on the trailer, Fx = 20,000 N to the right

the truck:

force on the truck due to gravity, Fg = 80,000 Nnormal force on the truck due to the road, N = 80,000 Nleft horizontal force on the truck, Fx = 20,000 Nright horizontal force on the truck, Fx = 26,400 N

The net force on each vehicle is calculated as follows;

for the trailer:

Net vertical force is calculated as;

\(\Sigma F_y = 250, 000 \ N - 250,000 \ N = 0\)

Net horizontal force is calculated as;

\(\Sigma F_x = 20,000 \ N\)

for the truck;

Net vertical force is calculated as;

\(\Sigma F_y =80,000 \ N - \ 80,000 \ N = 0\)

Net horizontal force is calculated as;

\(\Sigma F_x = 26,400 \ N - \ 20,000 \ N = 6,400 \ N \ to \ the \ right\)

"Your question is not complete, it seems to be missing the following information;"

find the net force on each vehicle.

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A tight knot can be easily opens by using a longer spanner. Give reasons

Answers

It is because the effort distance is greater than the load distance

Explanation:

As we know, Effort×effort distance = load × load distance

So when effort distance is increases,

The effort decreases

So when the spanner’s handle is long

A tight knot can easily be opened by less effrot

I hope it helped

When a 9.00 V voltage is applied to a resistor, it drives 0.325 A of current through the resistor. How much power does the resistor use? (Unit = W)

Can someone please explain how to do this question.

Answers

Answer: 2.925

Explanation: :)

Answer:

2.925

Explanation:

A light wave has a frequency of \((6 \times {10}^{8}).\)
What is the wavelength of the light wave?
(Assume the speed of light to be \((3 \times {10}^{8}).\))

Answers

Answer:

0.5m or 50 cm

Explanation:

Speed A cart, weighing 24.5 N, is released from rest on a 1.00-m ramp, inclined at an angle of 30.0° as shown in Figure 16. The cart rolls down the incline and strikes a second cart weighing 36.8 N.
a. Define the two carts as the system. Calculate the speed of the first cart at the bottom of the incline.
b. If the two carts stick together, with what initial speed will they move along?​

Answers

(a) The speed of the first cart at the bottom of the incline is  4.43 m/s, and (b)the initial speed of the two carts as they move along after the collision is 2.08 m/s.

The conservation of energy principle is a fundamental law in physics that states that energy cannot be created or destroyed, only transferred or transformed from one form to another. It is a powerful tool for predicting the behavior of physical systems and plays a critical role in many areas of science and engineering.

a. To calculate the speed of the first cart at the bottom of the incline, we can use the conservation of energy principle. At the top of the incline, the cart has only potential energy due to its position above the ground. At the bottom of the incline, all of this potential energy has been converted into kinetic energy, so we can equate the two:

mgh = (1/2)mv^2

where m is the mass of the cart, g is the acceleration due to gravity, h is the height of the incline, and v is the velocity of the cart at the bottom.

Plugging in the values given, we get:

(24.5 N)(9.81 m/s^2)(1.00 m) = (1/2)(24.5 N)v^2

Solving for v, we get:

v = √(2gh) = √(2(9.81 m/s^2)(1.00 m)) ≈ 4.43 m/s

Therefore, the speed of the first cart at the bottom of the incline is approximately 4.43 m/s.

b. If the two carts stick together, we can use conservation of momentum to determine their initial speed. Since the two carts stick together, they form a single system with a total mass of:

m_total = m1 + m2 = 24.5 N + 36.8 N = 61.3 N

Let v_i be the initial velocity of the system before the collision, and v_f be the final velocity of the system after the collision. By conservation of momentum:

m_total v_i = (m1 + m2) v_f

Plugging in the values given, we get:

(61.3 N) v_i = (24.5 N + 36.8 N) v_f

Solving for v_i, we get:

v_i = (24.5 N + 36.8 N) v_f / (61.3 N)

We need to determine the final velocity of the system after the collision. Since the carts stick together, their combined kinetic energy will be:

K = (1/2) m_total v_f^2

This kinetic energy must come from the potential energy of the first cart before the collision, so we can write:

m1gh = (1/2) m_total v_f^2

Plugging in the values given, we get:

(24.5 N)(9.81 m/s^2)(1.00 m) = (1/2)(61.3 N) v_f^2

Solving for v_f, we get:

v_f = √(2m1gh / m_total) = √(2(24.5 N)(9.81 m/s^2)(1.00 m) / (24.5 N + 36.8 N)) ≈ 3.27 m/s

Plugging this into the equation for v_i, we get:

v_i = (24.5 N + 36.8 N)(3.27 m/s) / (61.3 N) ≈ 2.08 m/s

So, the initial speed of the two carts as they move along after the collision is approximately 2.08 m/s.

Hence, The initial speed of the two carts as they go forward following the collision is 2.08 m/s, and the speed of the first cart is 4.43 m/s at the bottom of the hill.

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the ground state energy of an oscillating electron is 1.36 ev. how much energy must be added to the electron to move it to the third excited state? the fourth excited state?

Answers

To move an electron from ground state to the fourth excited state, you would need to add energy equal to 0.5×10^-18 Joules per electron

The first excited state has a lower bound of 2.00 ev, and the second excited state has a lower bound of 3.20 ev. To move an electron from the ground state to one of these higher-energy states, you would need to add energy equal to 1.36/2 = 0.52 ev per electron, or 6 x 10^-18 Joules per electron.

To move an electron from ground state to the fourth excited state, you would need to add energy equal to 1 - 2(1/2) = 0.5 x 10^-18 Joules per electron, or 5 x 10^-21 J/electron.

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Elements : Atoms :: Covalent compounds:____

Answers

Answer:

Hcl

Explanation:

Hydrogen and chlorine charge electrons and are non metals while compounds with metals are ionic

Convection is the transfer of heat energy by:

A Molecular contact
B Electromagnetic waves
C Density Differences
D Movement through a vacuum

Answers

the answer is a molecular contact I am pretty sure

1. did the waves seem to go any faster or slower when you tested a variety of amplitudes and frequency? explain.

Answers

When testing a variety of amplitudes and frequencies, the speed of waves does not change. The speed of a wave is determined by the properties of the medium it travels through, such as the density and elasticity of the material. In other words, the speed of a wave is a constant value that does not depend on the amplitude or frequency of the wave.

However, changing the amplitude and frequency of a wave can affect its wavelength and period. The wavelength is the distance between two consecutive peaks or troughs of a wave, while the period is the time it takes for a wave to complete one full cycle. As the amplitude increases, the wavelength of the wave also increases, while the period of the wave decreases. Similarly, as the frequency increases, the wavelength of the wave decreases, while the period of the wave increases.

When testing a variety of amplitudes and frequencies, the speed of waves does not change, but the wavelength and period of the wave can be affected.

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Prank text my sister, I wanna see her reaction.

‪(346) 298-3870‬

Answers

Answer:

she is going to be mad dude

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