How far does a 1,300-kg race car travel if it accelerates from rest at a rate of 14 m/s/s for 10
seconds?

Answer:

They are equal.

Explanation: They both weigh 100 pounds so it does not matter what object it is.

Answer:

Both 100 pounds of bricks and 100 pounds of feathers weigh the same amount, which is 100 pounds.

Explanation:

Both 100 pounds of bricks and 100 pounds of feathers weigh the same amount, which is 100 pounds. The weight of an object is typically measured in pounds or kilograms, regardless of the type of material it is made of. Therefore, the weight of 100 pounds of any material will always be the same as the weight of 100 pounds of any other material.

Answer:

when the magnitude of the acceleration is a minimum

Explanation:

Answer:

As spring falls in a vertical plane, the change in gravitational potential energy is transformed to elastic potential energy.

Explanation:

To calculate the spring constant, Hooke's law was used, as well as potential energy to calculate the gravitational and elastic potential energy.

Answer:

because if the plant that produced that type of energy broke down you would need another type of energy to replace it.

Explanation:

When a system's potential energy decreases while the system does work on the environment, its kinetic energy increases.

The question is asking about a process in which a system's potential energy decreases while the system does work on the environment. In this scenario, the system's kinetic energy would increase, as potential energy is converted into kinetic energy.
Potential energy is the energy stored within an object due to its position or shape, while kinetic energy is the energy of motion.

According to the law of conservation of energy, energy cannot be created or destroyed, only transformed from one form to another. Thus, when potential energy decreases, kinetic energy increases to make up for the lost potential energy.
To illustrate this with an example, consider a rock that is being dropped from a height. At the peak of the rock's height, it has potential energy due to its height above the ground. As it falls, this potential energy is converted into kinetic energy. The kinetic energy increases as the rock falls, and the potential energy decreases.
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Ans the answer is 0.25J

Explanation

i guess

Answer:

C

Explanation:

The acceleration will be negative, as in the problem statement, the upwards direction is defined as positive (the object is shot upwards and has a positive velocity), so immediately, we can eliminate A and B.

You can then use the kinematics equation:

\(v=v_o+at\), where

a= -9.8 m/s^2 (acceleration due to gravity)

t= 4 s (time)

v\(_0\)= 20 m/s (initial speed)

when you solve, the final velocity is -19.2 m/s, so the velocity is negative (the object is on its way down).  

It's not just here in the United States that we're seeing this, London has also added this category to their marathon.

This is an example of how society is constantly evolving and recognizing the need for inclusion and diversity. The social construction of gender and gender identity has traditionally been binary, with individuals being categorized as either male or female. However, as society has become more aware and accepting of non-binary gender identities, we are seeing a shift in the way that institutions and organizations are accommodating these individuals.

By creating a non-binary category in marathons, organizers are acknowledging the importance of inclusivity and providing a space for non-binary individuals to participate in sports without being forced to conform to binary gender categories.

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A piece of Gold can not be separated by physical means or chemical means into its parts, and it is the same throughout as a homogeneous

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✔ First calculating the speed :

V = d(in m)/t(in s)

✔ You now know the average car's speed, is time it takes to stop it completely, so you can calculate its acceleration :

a = V/t

Answer:

Q1) C, D

Q2) A

Q3) E

Q4) C

Q5) B

Q6) C

Explanation:

I think these are correct, hopefully it helps!

In a p-V (pressure-volume) diagram for water, the line that exists is the saturated liquid line. This line represents the boundary between the liquid and vapor phases of water at equilibrium. It indicates the conditions at which water exists as a saturated liquid.

The saturated vapor line, on the other hand, represents the boundary between the liquid and vapor phases of water when it exists as a saturated vapor. The saturated solid line is not applicable in a p-V diagram for water, as water does not have a stable solid phase at standard atmospheric conditions.

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The diameter of the sphere can be solved using the relationship between the tension in the string, the linear density of the string, and the frequency of the standing waves.

This relationship is given by the equation:
f = (n/2L) * sqrt(T/u)

where f is the frequency of the standing wave, n is the number of the harmonic, L is the length of the string, T is the tension in the string, and u is the linear density of the string.

Before the sphere was submerged, the tension in the string was equal to the weight of the sphere, or T = (2.1 kg) (9.8 m/s^{2}) = 20.58 N.

After the sphere was submerged, the tension in the string was reduced by the buoyant force of the water, which is equal to the weight of the water displaced by the sphere. The volume of the sphere is given by:

V = (4/3) * pi * (d/2)^{3}

where d is the diameter of the sphere. The weight of the water displaced is equal to the volume of the sphere times the density of water, or:

Fb = (4/3) * pi * (d/2)^{3} * (1000 kg/m^{3}) * (9.8 m/s^{2})

The tension in the string after the sphere was submerged is equal to the weight of the sphere minus the buoyant force, or:

T' = 20.58 N - (4/3) * pi * (d/2)^{3} * (1000 kg/m^{3}) * (9.8 m/s^{2})

Since the frequency of the fifth harmonic with the sphere submerged is equal to the frequency of the third harmonic before the sphere was submerged, we can set the two equations equal to each other and solve for d:

(5/2L) * sqrt(T'/u) = (3/2L) * sqrt(T/u)

Squaring both sides and rearranging terms gives:

(25/9) * (T'/T) = (u/u)

Substituting the expressions for T and T' and simplifying gives:

(25/9) * [(20.58 N - (4/3) * pi * (d/2)^{3} * (1000 kg/m^{3}) * (9.8 m/s^{2}))/(20.58 N)] = 1

Solving for d gives:

d = 2 * [(9/25) * (20.58 N)/(4 * pi * (1000 kg/m^{3}) * (9.8 m/s^{2})) - (1/3)]^{(1/3)}

d = 0.117 m

Therefore, the diameter of the sphere is 0.117 m, or 11.7 cm.

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That's a great analogy!

The quote you mentioned highlights the idea that challenges and difficulties in life can sometimes serve as a precursor to achieving something remarkable or experiencing personal growth. Just like an arrow, which needs to be pulled back before it can be launched forward with speed and precision, setbacks and obstacles can provide the momentum and direction needed for progress.

During tough times, it's important to stay focused on your goals and maintain a positive mindset. Instead of allowing difficulties to discourage you, view them as opportunities for learning and development. By staying determined and persevering through adversity, you increase your chances of reaching new heights and accomplishing great things.

Remember, success often comes after overcoming obstacles, and setbacks can provide valuable lessons and insights that contribute to personal and professional growth. So, keep your aim steady, embrace challenges as stepping stones, and maintain your focus on the target you're striving to achieve.

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1a) The total energy stored when all three weights are raised by 70 cm is 80.5 J.

1b) The height of the tank is 2 m.

2b) The potential energy is converted into kinetic energy when the water flows out of the taps 6.32 m/s.

3a) The mass of water that goes over the falls every second is 1 x 10⁶ kg.

3b) The gravitational potential energy of 1 kg of water at the top of the falls 1000 J.

3c) The speed of the water as it reaches the bottom if all the GPE stored in 1 kg of water is transferred to kinetic energy is 44.72 m/s.

3d) The water will not be falling as fast as the speed calculated in part c suggests because of the presence of air resistance and the fact that the water falls through a medium (air) which offers resistance to its motion.

3e) The energy transferred when the GPE stored in the water falling in one second is transferred to other energy stores is finally stored in thermal energy stores due to the heat generated by the water as it hits the bottom.

1a) To calculate the amount of energy stored in the three weights, we use the formula given below:

E = mgh

Where,E = Energy (Joules)

m = Mass (kg)

g = Gravity (10 N/kg)

h = Height (m)

For the 4.5 kg weight:

E = 4.5 x 10 x 0.7 = 31.5 J

For each of the 3.5 kg weight:

E = 3.5 x 10 x 0.7 = 24.5 J

Thus, the total energy stored when all three weights are raised by 70 cm is:

31.5 J + 24.5 J + 24.5 J = 80.5 J

1b) To calculate how far the 4.5 kg weight must be lifted to store 45 J of energy, we use the formula:

E = mghh = E/mg = 45 / (4.5 x 10) = 1 m2a)

To calculate the gravitational potential energy stored in the water in the tank when it is full, we use the formula given below:

E = mgh

Where,E = Energy (Joules)

m = Mass (kg)

g = Gravity (10 N/kg)

h = Height (m)

The mass of 1 litre of water is 1 kg and the tank can hold 200 litres of water. Therefore, the total mass of water in the tank is:

Mass = 200 kg

The height of the tank is 2 m.

Therefore, the gravitational potential energy stored in the water in the tank is:

E = mgh = 200 x 10 x 2 = 4000 J

Assumptions made in the answer:

We have assumed that the tank is full.

2b) To calculate the speed at which the water would come out of the bathroom and kitchen taps, we use the formula given below:

PE = KEPE = mghKE = 1/2mv²

Where,PE = Potential Energy (Joules)

KE = Kinetic Energy (Joules)

m = Mass (kg)

g = Gravity (10 N/kg)

h = Height (m)

v = Velocity (m/s)

Assuming that the potential energy of the water in the tank is converted into kinetic energy when the water flows out of the taps, the potential energy stored in the water in the tank is given by:

PE = mgh = 200 x 10 x 2 = 4000 J

The potential energy is converted into kinetic energy when the water flows out of the taps.

Therefore, KE = 1/2mv²v² = 2KE/mv² = 2(4000)/200 = 40 m²/s²v = √(40) = 6.32 m/s (speed of the water coming out of the taps)

3a) To calculate the mass of water that goes over the falls every second, we use the formula given below:

Mass = Volume x Density

Where,Volume = 1000 m³/s, Density = 1000 kg/m³, Mass = 1000 x 1000 = 1000000 kg = 1 x 10⁶ kg

3b) To calculate the gravitational potential energy of 1 kg of water at the top of the falls, we use the formula:

E = mgh

Where,m = 1 kg, g = 10 N/kg, h = 100 m, E = 1 x 10 x 100 = 1000 J

3c) To calculate the speed of the water as it reaches the bottom if all the GPE stored in 1 kg of water is transferred to kinetic energy, we use the formula given below:

PE = KEP

E = mgh

KE = 1/2mv²

Where,PE = Potential Energy (Joules)

KE = Kinetic Energy (Joules)

m = Mass (kg)

g = Gravity (10 N/kg)

h = Height (m)

v = Velocity (m/s)

Assuming that all the potential energy is converted into kinetic energy when the water reaches the bottom,

PE = KEKE = mghv² = 2mghv² = 2(1)(10)(100)v² = 2000v = √(2000) = 44.72 m/s

3d) The water will not be falling as fast as the speed calculated in part c suggests because of the presence of air resistance and the fact that the water falls through a medium (air) which offers resistance to its motion.

3e) To calculate the total energy transferred per second as the GPE stored in the water falling in one second is transferred to other energy stores, we use the formula given below:

Power = Energy / Time

Where,Power = 1 x 10⁶ x 10 x 100 = 1 x 10⁹ W = 1 GW (assuming that 1 m³ of water falls every second)3f)

The energy transferred when the GPE stored in the water falling in one second is transferred to other energy stores is finally stored in thermal energy stores due to the heat generated by the water as it hits the bottom.

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The maximum work required by the machine is 16420 J.

Work is energy transferred to or from an object via the application of the  force along with the  displacement. Work is the  standard mechanical  quantity. In its simple form, for a constant force aligned with it  direction of motions the work equals the product of the forced by the  strength and to the  distance traveled.

Here mass M is 215 kg

And the height lifted H is 5.65

The energy or workdone needed to lift is W= MgH = 215(9.8)(5.65)= 11904.5 J

The minimum efficiency of to  the machine is 72.5 %

So we can write that

The workdone by machine is

11904.5(100/72.5) = 16420 J ( approx)

So the workdone by machine is 16420 J

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The rank of magnitude of electric field is given by:

point A > point B > point C.

An great approach to see electric fields is with electric field lines. They had their beginnings with Michael Faraday himself.

At one point, a field line is drawn perpendicular to the net. As a result, the direction of the electric field at any place is the same as the tangent to the electric field line.

Second, the relative strength (magnitude) of the electric field at a location is correlated with the relative density of the field lines around that point.

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Answer:

I don't know this answer at all

Explanation:

I don't know about these problems

Larry Page, real name Lawrence Edward Page, is a computer scientist and entrepreneur from the United States who co-founded Goo-gle, one of the most well-known websites on the Internet, with Sergey Brin on March 26, 1973 in East Lansing, Michigan.

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The charge of a newly formed oxygen ion would be -2

Hope this helps :)

Assuming 100% relative humidity, the dewpoint temperature in radiation fog at a temperature of 10 °C (50 °F) is approximately 10 °C.

To find the dewpoint in radiation fog at a temperature of 10 °C (50 °F), we need to consider the saturation point of air, which is the temperature at which the air becomes saturated and condensation occurs.

The dewpoint temperature is the temperature at which the air must be cooled for it to reach saturation and for condensation to occur. When the dewpoint temperature is reached, fog or dew will form.

The relationship between temperature, relative humidity, and dewpoint temperature is complex and depends on various factors such as air pressure and moisture content. However, we can estimate the dewpoint using empirical formulas or tables.

One commonly used approximation is the Magnus formula:

Td = (T × Arctan[0.151977 × (RH + 8.313659)^0.5]) + Arctan(T + RH) - Arctan(RH - 1.676331) + 0.00391838 × (RH^(3/2)) × Arctan(0.023101 × RH) - 4.686035

Where:

Td = Dewpoint temperature in degrees Celsius

T = Temperature in degrees Celsius

RH = Relative humidity (expressed as a decimal)

Assuming a relative humidity of 100%, which represents saturated air, we can estimate the dewpoint temperature at a temperature of 10 °C (50 °F).

Substituting the values:

T = 10 °C

For simplicity, we assume RH = 1 (100% relative humidity).

Td = (10 × Arctan[0.151977 × (1 + 8.313659)^0.5]) + Arctan(10 + 1) - Arctan(1 - 1.676331) + 0.00391838 × (1^(3/2)) × Arctan(0.023101 × 1) - 4.686035

Simplifying the equation, we find that the estimated dewpoint temperature (Td) is approximately equal to 10 °C.

Therefore, assuming 100% relative humidity, the dewpoint temperature in radiation fog at a temperature of 10 °C (50 °F) is approximately 10 °C.

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The star is moving away from Earth at a velocity of 1.8 x 106 m/s.

The Doppler Effect describes the shift in wavelength of a wave when the source is moving in relation to the observer. The shift can be observed in sound waves, light waves, and other waves.

The Doppler Effect can be used to determine the velocity of objects moving away from an observer, as in the case of stars moving away from Earth.

The velocity of a star moving away from Earth can be determined using the equation:

v = Δλ/λ x c, Where v is the velocity of the star, Δλ is the shift in wavelength of the spectral line, λ is the wavelength of the spectral line measured in the lab on Earth, and c is the speed of light (3.00 x 108 m/s).

In this case, the shift in wavelength of the spectral line is Δλ = 500.3 nm - 500 nm = 0.3 nm.

The wavelength of the spectral line measured in the lab on Earth is λ = 500 nm.

Plugging in these values to the equation above: v = Δλ/λ x cv = (0.3 nm / 500 nm) x (3.00 x 108 m/s) = 1.8 x 106 m/s.

Therefore, velocity of star 1.8 x 106 m/s.

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Answer:

The substance of the physical world; anything that occupies space or has substance. An organized way of scientists to gather and pursue scientific knowledge. Consists of three main components: Hypothesis, Observation, and Experimentation. One of the main components of the Scientific method.

Explanation:

a. The Earth's average speed relative to the Sun is 2970 m/s

b. The earth's average velocity over a period of one year is 0 m/s

The speed of the earth relative to the sun is given by v = √(GM/r) where

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

v = √(GM/r)

v = √(6.67 × 10⁻¹¹ Nm²/kg² × 1.989 × 10³⁰ kg/1.5043 × 10¹¹ m)

v = √(13.26663 × 10¹⁹ Nm²/kg/1.5043 × 10¹¹ m)

v = √(8.8191 × 10⁸ Nm²/kg)

v = 2.97 × 10⁴ m/s

v = 2970 m/s

So, the Earth's average speed relative to the Sun is 2970 m/s

The average velocity of the Earth is v = ΔD/T where

Now, since the earth starts and stopps at the same position, D' = D.

So, ΔD = D' - D = 0

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

v = ΔD/T

v = 0 m/3.1536 × 10⁸ s

v = 0 m/s

So, the earth's average velocity over a period of one year is 0 m/s

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Answer:

Take a look at the attachment below.

Explanation:

Current for each branch of the circuit is 2A and equivalent resistance of the circuit will be 5 ohms. The current through the battery is 6A.

An electric current is defined as a stream of charged particles, such as electrons or ions, moving through an electrical conductor or space, which is described as the flow of electric charge through a surface or in a control volume.

Current is expressed as:

I=V/R

Where, I is the current

V is the voltage

R is the resistance

For above given information,

Since all resistors have the same resistance, it would be fine to find only 1 branch as the current would be the same for all branches.

\(I=V/R_1\)

I= 30/15= 2 A

Equivalent resistance for parallel circuits is the sum of reciprocals of each resistor.

\(1/R= 1/R_1+ 1/R_2+ 1/R_3\)

1/R= 1/15+ 1/15 + 1/15

1/R=3/15

R = 15/3= 5 ohms

I = V/R

Where I is current, V is voltage and R is the equivalent resistance

=> I = 30/5

=> I = 6 A

Thus, current for each branch of the circuit is 2A and equivalent resistance of the circuit will be 5 ohms. The current through the battery is 6A.

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Answer:

volatile

Explanation:

volatile means: (of a substance) easily evaporated at normal temperatures.

Answer:

The answer is D. Volatile

Explanation:

Answer:

True.

Explanation:

A piece of tubing made from soft aluminum with a 1/4" outer diameter (OD) is typically malleable enough to be bent by hand. Soft aluminum is known for its relatively low hardness and high malleability, making it easier to bend and shape compared to other metals. However, the exact ease of bending may also depend on the thickness and wall thickness of the tubing.

Answer:

eye ,mouth,and,ears face

Answer:

knee, elbow, and wrist

Explanation:

Answer:

An infrared camera – also called IR camera, thermal means heat it can track your heat camera or thermal camera – is a measuring  by instrument it means its a measuring tool

used for non-contact measurements of the surface temperature of objects.

Explanation:

kids are oof

Answer:

false

Explanation: