The figure below shows the position of an object as a function of time. At which times is the particle moving to the right?

Answer:

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

From the question we have

force = 75 × 3

We have the final answer as

Hope this helps you

Answer:

A

Explanation:

The effects due to light from distant stars

The characteristics of the solar system would have to be known or calculated in order to send a probe to a distant planet, such as Jupiter, due to the effects of the gravity from the other planets. Hence, option C is the correct answer.

When sending a probe to a distant planet, such as Jupiter, one of the critical factors that would have to be known or calculated is the effects due to the gravity from the other planets in the solar system. The gravitational interactions between the planets can significantly influence the trajectory and path of the probe during its journey. Accurate calculations are necessary to ensure that the probe's trajectory is properly planned and adjusted to reach its destination with precision. Hence, option C is the correct answer.

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The lightning strike was approximately 5 miles away.

Observing a lightning flash and counting 25 seconds allows us to determine the distance of the lightning strike.

Since the speed of sound is approximately 0.2 miles per second, we can calculate the distance by multiplying the speed of sound by the time it took for the sound to reach us.

In this case, multiplying 0.2 miles per second by 25 seconds gives us a distance of 5 miles. Therefore, the lightning strike was approximately 5 miles away from our observation point.

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Answer:

See Below.

Explanation:

I can't transpose the diagram onto Brainly. I'll do my best to describe what is going on.

Now you are ready to develop the equation

Clockwise

There is only 1 force where B is the Balance point that is going clockwise

10 * Force A

The AntiClockwise Moments

Platform: 4*10kg * 9.8 = 392 N m

Physics T: 2 * 75 * 9.8 = 1470 N m

So the Anti Clockwise moments = the clockwise moments.

10 * Force A = 392 NM  + 1470NM   Divide by 10. Remember that is in meters

Force A = 1862 N M / 10 10 M = 186 N

Does that make some sort of sense? It should Student A is the furthest distance from where all the action is at B. Therefore he is carrying the lightest weight.

Now what is the total force?

(75 + 10 ) * 9.8 = 85 * 9.8 = 833

This is one of those strange things that won't make sense until it does. Read the next sentence carefully. B is carrying most of the weight. Remember Newtons measure weight.

Support of A = 186 N

Support of B = x

Total of A+B = 933

186 + x = 833

x = 933 - 186

x = 647

So the forces are

A supports    186

B supports    647

Answer:

They appear to recede from our viewpoint.

That is, their emitted spectra are shifted toward the red (red-shift).

The wave-lengths that are received on earth are somewhat longer because of the "Doppler" shift of the receding atoms.

There are some traits of successful entrepreneurs, these are as follows:

1. He should be a highly motivated towards the work.

2. He sholud be creative in nature. He should think out of box and develop some ideas for the problem.

3. He should have clear vision for the future.

4. He should be very versatile and ready to adapt any changes.

5. He should be ready to take some risk.

6. He should have the ability of decision making and leadership quality.

Answer:

2.205 pounds

Explanation:

5.5 kg is 2.205 lbs. hope this helps!

Answer:

2.53m/s

Explanation:

Initial momentum in a system= Final momentum in a system

65kg*3m/s+12kg*0m/s=(65kg+12kg)*v

195kgm/s=77kg*v

v=2.53m/s

The answer is no. Hope this helps

Answer:

A. a balance and a beaker of water

Explanation:

The balance is for mass.

The beaker of water is for volume.

Answer:

option B (3.0A)

Explanation:

voltage = current × resistance

v = A ×r

rearranged to find current = current = voltage ÷ resistance

assuming you meant 2.0 resistor,

6 ÷ 2 = 3

ans == 3.0

Ohm's law states that:

where V is the voltage, R is the resistance and I is the current; in this case the current is 0.51 A and the resistance is 29 Ohms. Plugging these and solving for the voltage we have:

Therefore, the voltage is 14.79 V

Answer:

No. 1 is the correct answer.

Explanation:

The natural resources which deplets after long and continious use and are unable to be recreated/ takes a lot of time to renew are non renewable resources

If the pressure reading on a vacuum gauge rises from 100 microns to 5,000 microns when the vacuum pump is turned off and stays there, this may indicate that there is a leak in the vacuum system.

When the vacuum pump is turned on, it creates a low-pressure environment by removing gas molecules from the system, causing the pressure reading on the gauge to decrease. When the pump is turned off, the pressure in the system starts to equilibrate with the ambient pressure, causing the pressure reading on the gauge to increase.

If the pressure reading on the gauge continues to rise and stabilize at a higher value than the initial pressure after the pump is turned off, it suggests that there is a leak in the vacuum system that is allowing air or other gases to enter. The leak could be at any point in the vacuum system, such as a damaged O-ring, a loose fitting, or a crack in the system.

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Answer:

v =25 m/s

time= 50 s

Velocity =Displacement/Time

Displacement = Velocity × Time

S = 25×50

s=1250m

Explanation:

v =25 m/s

time= 50 s

Velocity =Displacement/Time

Displacement = Velocity × Time

To achieve an outlet temperature of 125°C, needed a heat flux of 6919 W/m².

To solve this problem, we need to use the energy balance equation, which relates the heat transfer rate, mass flow rate, specific heat capacity, and temperature difference.

Q = mdot × cp × (Tout - Tin)

Where,

Q = heat transfer rate (W)

mdot = mass flow rate (kg/s)

cp = specific heat capacity of air (J/kg.K)

Tout = outlet temperature (K)

Tin = inlet temperature (K)

We can assume that the air is incompressible, and thus the specific heat capacity of air at constant pressure (cp) can be taken as a constant value of 1005 J/kg.K.

Next, we can use the Reynolds number to determine the flow regime in the tube.

Re = (ρ × D × V) / μ

Where,

ρ = density of air (kg/m³)

D = diameter of the tube (m)

V = velocity of air (m/s)

μ  = viscosity of air (Pa.s)

Assuming atmospheric pressure and using the properties of air at 20°C, we get:

ρ = 1.2041 kg/m³ and μ = 1.81 x 10^-5 Pa.s

Re = (1.2041 kg/m³ × 0.05 m × (0.005 kg/s / (π×(0.025 m)² / 4))) / (1.81 x 10^-5 Pa.s) = 26197

Since the Reynolds number is greater than 4000, we can assume that the flow is turbulent and fully developed.

Next, we can use the Dittus-Boelter equation to calculate the heat transfer coefficient (h).

ν = 0.023 × Re^(4/5) × Pr^(0.4)

Where,

Pr = Prandtl number of air (unitless)

Pr = (cp × μ) / k, where k is thermal conductivity of air at 20°C, k=0.0263 W/m.K

Pr = (1005 J/kg.K × 1.81 x 10^-5 Pa.s) / 0.0263 W/m.K = 0.706

ν = 0.023 × (26197)^(4/5) × (0.706)^(0.4) = 119.23

h = (ν × k) / D = (119.23 × 0.0263 W/m.K) / 0.05 m = 62.25 W/m².K

Now we can calculate the required heat flux using the energy balance equation.

Q = mdot × cp × (Tout - Tin) = h × pi × D × (Tout - Tin)

We can rearrange the equation to get the heat flux (q).

q = Q / (π × D × (Tout - Tin)) = h × (Tout - Tin)

Substituting the values, we get:

q = 62.25 W/m².K × (125°C - 20°C) = 6919 W/m²

Therefore, to achieve an outlet temperature of 125°C, we need a heat flux of 6919 W/m².

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Answer:

Explanation:

This is visible light.

The colors violet, blue, green, yellow and red having the given range of wavelength, comes at the part of visible light in the spectrum.

Electromagnetic spectrum is the arrangement of electromagnetic radiations in the order of their increasing frequency and decreasing wavelength.

Here,

The colors violet, blue, green, yellow and red are given according to their wavelengths ranging from 400 nm to 650 nm.

The electromagnetic spectrum includes the various radiations, which are arranged accordingly from the longest to shortest wavelength and from the lowest to the highest frequency.

The spectrum includes the range from the radio waves to gamma rays.

In this, the radio waves lies in the frequency range of about 3 x 10¹¹ Hz and wavelength greater than 1 nm and the spectrum extends upto the gamma rays that lies in the frequency range of 10²⁰- 10²⁴ Hz and wavelength less than 10⁻¹²m.

The given data of colors have a wavelength range of 400 nm to 650 nm. Therefore, the given colors can be placed at the part of visible light whose wavelength lies between 400 nm to 750 nm, in the spectrum.

Hence,

The colors violet, blue, green, yellow and red having the given range of wavelength, comes at the part of visible light in the spectrum.

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If the radius of the cylinder is halved and length is kept unchanged then the density of air inside the cylinder will increase.

As it can be said that density is inversely proportion to the square of the radius.

Density of Cylinder

Density is the ratio of mass to volume.

The formula for density is: ρ= m/v.

The formula for the Mean Density of a cylinder is:

                                         ρ= m/ (π•r²•h)

where:

ρ is the density of the cylinder

m is the mass of the cylinder

h is the height of the cylinder

So, with increase in radius the of the cylinder there is decrease in the density of cylinder.

And on decreasing the radius of the cylinder there is increase in the density of the cylinder.

As it can be said that density is inversely proportion to the square of the radius.

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The female skater moves backward at a speed of 3 m/s. The post-impulse speed of the male skater is 2.08m/s.

Momentum (linear) along, say, the x-axis is:

p=mv

so we have for the 2 skaters system:

\(p_before = p_after\)

(45.0)+(65.0)= (45*3)+(65*v)

v= - 135/65= -2.08m/s

Speed in physics refers to how fast an object is moving. It is a scalar quantity that only takes into account the magnitude of the velocity of the object, not its direction. The speed of an object can be calculated by dividing the distance it travels by the time it takes to travel that distance. The SI unit of speed is meters per second (m/s), but other units such as miles per hour (mph) or kilometers per hour (km/h) can also be used.

Speed can be constant, meaning the object is moving at a steady rate, or it can be changing, meaning the object is accelerating or decelerating. Acceleration is the rate at which an object's speed changes over time, and it is typically measured in meters per second squared (m/s^2).

The concept of speed is fundamental to many areas of physics, including mechanics, thermodynamics, and electromagnetism. It is also a critical component of everyday life, influencing how we travel, communicate, and interact with the world around us.

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Answer:

Describe the H-R Diagram and some useful things it shows us.

The Hertzsprung-Russell (H-R) Diagram is a tool used by astronomers to classify and understand the properties of stars. The diagram plots a star's surface temperature against its luminosity (or brightness). A star's surface temperature is measured using its color, specifically its spectral type. The luminosity of a star is determined by its radius and temperature.

The H-R Diagram allows astronomers to see patterns in the properties of stars. For example, most stars fall into a band called the Main Sequence, where hotter stars are more luminous. This relationship between temperature and luminosity is known as the Mass-Luminosity Relationship. The H-R Diagram also allows astronomers to classify stars based on their stage of evolution. For example, red giants are stars that have exhausted their hydrogen fuel and are expanding and cooling. White dwarfs, on the other hand, are stars that have burned all their fuel and collapsed to a very small size.

The H-R Diagram is also useful for understanding the life cycle of stars. A star typically spends most of its life on the Main Sequence. As it runs out of fuel, it will expand and cool, eventually becoming a red giant. In some cases, the outer layers of the star will be ejected, forming a planetary nebula, and the core will collapse to become a white dwarf. Stars that are much more massive than the sun will have a more complex life cycle, possibly including supernova explosions and the formation of neutron stars or black holes.

In summary, the H-R Diagram is a powerful tool for understanding the properties and life cycles of stars. It allows astronomers to classify stars based on their spectral type, luminosity, and stage of evolution. This knowledge helps us to answer fundamental questions about the universe, including how it formed and how it will evolve in the future.

Explanation:

Answer:

For any given motion, the distance is

Explanation:

Explanation:

Given:

v₀ = 5.0 m/s

a = 2.5 m/s²

Equation:

Δx = v₀ t + ½ at²

Δx = (5.0 m/s) t + ½ (2.5 m/s²) t²

Δx = 5t + 1.25t²

Make a table of data using 1.0 increments for t.

Graph the data.  See included image.

Answer:

J = 500 kg-m/s

Explanation:

Given that,

Initial speed of the motor, u = 5 m/s

Final speed of the motor, v = 7 m/s

Mass of the boat, m = 250 kg

We need to find the impulse applied by the motor. We know that impulse is equal to the change in momentum. It is represented by letter J.

J = m(v-u)

J = 250 (7-5)

J = 500 kg-m/s

Hence, the impulse applied by the motor is 500 kg-m/s.

A wedge is like a ramp that can work while in motion.

As a tool for raising or lowering a load, an inclined plane, also referred to as a ramp, is a flat supporting surface that is tilted at an angle from the vertical direction with one end higher than the other. One of the six traditional simple machines that Renaissance scientists defined is the inclined plane.

Heavy loads are transported over vertical obstacles using inclined planes. Examples include a ramp used to load cargo into a truck, a pedestrian ascending a ramp, or an automobile or train ascending a grade.

Less force is needed to lift an object up an inclined plane than to lift it straight up, but the distance travelled is greater. Hence, a wedge is like a ramp that can work while in motion.

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In the median plane of an electric dipole, the electric field is neither parallel nor antiparallel to the electric dipole moment. Instead, it is perpendicular to the electric dipole moment.

What is Dipole Moment?

Dipole moment is a concept in physics that describes the magnitude and direction of the separation of electric charge in a system with a dipole, such as a molecule or an object with an uneven distribution of charge. It is a measure of the polarity or asymmetry of a charge distribution.

The electric field lines in the median plane of an electric dipole form circular loops around the dipole axis. At points on the perpendicular bisector of the dipole (i.e., in the median plane), the electric field lines are symmetrically distributed around the dipole axis, and the electric field is directed perpendicular to the dipole moment vector.

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Answer:

Renewable sources are better because they don't damage the environment. As of now, there is a r=lot of damage already done to the environment thanks to non-renewable resources, and soon a lot of this damage will be irreversible. Another good thing about renewable resources is that that it is unlimited, this means that it is a steady source of energy and items.

Non renewable resources are good for the economy. People are so used to using non renewable resources that they might not want to switch over to renewable resources. People will keep buying these product so it is a steady item to invest in and profit off of. Non renewable resources also have a lot  more research on them and people have found multiple different ways to utilize it so people might like it more.

Achieving a speed of 112.25 km/h is impossible for a human.

The frequency of an event is its repetitions per unit of time. In a contrast to spatial frequency, it is also sometimes referred to as temporal frequency. Hertz (Hz), which equals one (event) per second, is the unit of frequency. The reciprocal of frequency is period, which is defined as the length of time for one cycle of a repeating occurrence.

According to the question:

Emitted frequency, f₀

Frequency heard when athlete approaches horn, f₁

Frequency heard when the athlete passes horn, f₂

Speed of the athlete (observer), v₁

Speed of sound in air = 343m/s

When an athlete approaches the horn, the frequency observed is given by,

f₁=( (v+v₁)/(v-v₂) ) ₓ f₀

f₂=( (v-v₁)/(v-v₂) ) ₓ f₀

From question,

f₂/f₁ = 5/6

5/6 = v-v₁/v+v₁

hence, v₁ = 112.25 km/h

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Answer:

Movement skills in square dancing transfer to ballroom dancing when they both require you to dance in a rhyme.

Explanation:

Answer:

yes it doesn't matter

Explanation:

it doesn't matter because troughs and crests are the same and either can be used