Two particles, each of mass m, are a distance d apart. To bring a third particle, with mass 2m, from far away to a resting point midway between the two particles the work done by an external agent is given by: A. 4Gm2/d B. -4Gm2/d. C. 8Gm2/d2 D. -8Gm2/d2 E. zero ​

Answer:

The first options is the ans(Circuit) it should have been electric circuit

Answer:

Radio signals and telescopes

Explanation:

I believe that they would uses those because with a telescope you can see things if they are millions of miles away from earth or where ever. And with radio signals you could try and see if there is any sign of life beyond on the knowledge we know of the universe.

Note: The values given in the answer are rounded off to the nearest hundredth.

Answer:

I believe it is 0.834

Answer: Constant Speed

Explanation:

Object's speed does no(sic) change over its entire distance.

No change in speed means that the object is either at constant speed, or is stationary.

Explanation:[tex]\sf{hey\:}[/tex] [tex]\sf\cancel{mate\:Here\:}[/tex] [tex]\sf\red{is\:ur\:answer}[/tex]

when it is at rest.

because,

kinetic energy occurs when object in motion.

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An object has no kinetic energy when it is at rest (Option A).

Kinetic energy is the measure of the work that an object does by virtue of its motion. Simple activities like walking, jumping, throwing, and falling involve kinetic energy. In this article, let us familiarize ourselves with the concept of kinetic energy.

Kinetic energy is the energy an object possesses due to its motion. The formula for kinetic energy is

KE = 1/2mv²,

Where m is the mass of the object and

v is its velocity.

When an object is at rest, it has zero velocity, which means that its kinetic energy is also zero.

Option B is not correct because even if an object is moving very slowly, it still has some kinetic energy. The amount of kinetic energy it has will depend on its mass and velocity.

Option C is not correct because the force acting on an object does not affect its kinetic energy directly.

Kinetic energy is related to an object's motion, not its forces.

Option D is not correct because an object's electrical charge does not affect its kinetic energy directly. The amount of kinetic energy an object has is determined solely by its motion.

Learn more about kinetic energy here:

https://brainly.com/question/15764612

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Answer:

[tex]\huge\underline\color{green}{Answer \: ☘}[/tex]

In the case of a water wave in the ocean, the medium through which the wave travels is the ocean water. In the case of a sound wave moving from the church choir to the pews, the medium through which the sound wave travels is the air in the room.

hope helpful~

Answer:

53 minutes

Explanation:

To solve this problem, we need to use common proportions to convert.

= 11.7km * 1mi/1.61km * 1hr/8.2mi * 60min/hr

≈ 53 minutes

Best of LUck!

Answer:Hope it will help you.

Explanation:

Answer:

[tex]\boxed {\boxed {\sf a= 1.5 \ m/s^2}}[/tex]

Explanation:

Acceleration is the change in velocity over time, so it is calculated using the following formula.

[tex]a= \frac{v_f-v_i}{t}[/tex]

The object is initially moving at 10.5 meters per second. After 2 seconds, it is moving at 13.5 meters per second.

Substitute the values into the formula.

[tex]a= \frac{13.5 \ m/s - 10.5 \ m/s}{2 \ s}[/tex]

Solve the numerator.

[tex]a= \frac{3 \ m/s}{2 \ s}[/tex]

Divide.

[tex]a=1.5 \ m/s/s \\a= 1.5 \ m/s^2[/tex]

The acceleration of the object is 1.5 meters per second squared.

Answer:

Newton's third law states that when two bodies interact, they apply forces to one another that are equal in magnitude and opposite in direction. The third law is also known as the law of action and reaction.

Explanation:

Examples of Newton's third law of motion are ubiquitous in everyday life. For example, when you jump, your legs apply a force to the ground, and the ground applies and equal and opposite reaction force that propels you into the air. Engineers apply Newton's third law when designing rockets and other projectile devices.

Explanation:

when two body interact.........

Increasing the current in the filament.

Decreasing the potential difference between the cathode and anode.

Decreasing the current in the filament.

Increasing the potential difference between the cathode and the anode.

Answer:

When unbalanced forces act on an object at rest, the object will move. In the two examples mentioned earlier, the net force on the object is greater than zero. Unbalanced forces produced change in motion (acceleration) and the receivers of the forces - the piano and the rope - moved.

Answer:

R1 and R2 denote the resistances of the labelled edges. For a circuit with resistances R1 and R2 in series or in parallel as in Figure 2, the effective resistance can be calculated by using the following rules. Rab = R1 + R2. Proof.

Explanation:

^^^^^^^^^^^^^

Answer:

Accelaration is 0.526 m/s²

Explanation:

 Data :

     Mass = m = 38000 kg

     Force = F = 20000 N

According to newton second law of motion

      F = ma

     ⇒ a = F/m =  20000/38000

         a = 0.526 m/s²

Answer:

4m

Explanation:

you divide 20m/s by 5 seconds

Answer:

the metal will melt

Explanation:

from solid to liquid

Answer:

They are different sizes.

Explanation:

Because electrons are what take up space in atoms, the result is that the size of the biggest filled orbital determines the size of the atom or ion. As you go down the periodic table, usually atoms get bigger because n gets bigger (there are electrons in higher shells).

Hi there!

Part 1:

Assuming this is from the work-energy unit, we can use the work-energy theorem to solve.

Since the block starts from rest:

Initial energy = GPE = mgh

Final energy = KE = 1/2mv²

We are only given the diagonal distance of the ramp, so we must solve for its height using trigonometry.

sin(30) = O/H

Hsin(30) = 11.9sin(30) = 5.95 m

Now, solve by setting the GPE and KE equal:

mgh = 1/2mv²

gh = 1/2v²

v = √2gh

v = √2(9.8)(5.95) = 10.8 m/s

Part 2:

Now, we can use the equation for work:

W = ΔKE

The final velocity of the block after sliding is 0 m/s, so:

W = 1/2mv²

Recall the equation for work:

W = Fdcosθ

Since friction works AGAINST motion, cos(180) = -1.

Thus, the work done by friction is:

W = -Fd

Recall the equation for kinetic friction:

F = μmg

Thus:

0 = 1/2mv² - Fd

0 = 1/2mv² - μmg

μmgd = 1/2mv²

Cancel out the mass and rearrange to solve for the coefficient of friction:

μgd = 1/2v²

μd = 0.5v²/gd

μ = 0.5(10.8²)/(9.8)(21) = 0.283

Part 3:

The energy lost due to friction is equivalent to the WORK DONE by friction, which is equivalent to the initial kinetic energy of the block at the bottom of the ramp.

Thus:

W = 1/2mv² = Fd

W = 1/2(10)(10.8²) = 583.1 J

Answer:

a = 1.04m/s²

Explanation:

a =f/m

a =77N/74kg

a = 1.04,m/s²

The time taken for the cheetah to accelerate from rest to 20 m/s is 2 seconds

This can be defined as the rate of change of velocity of a body, or it can be defined as the change in velocity of a body, per time. The S.I unit of acceleration is m/s²
To calculate the amount of time it takes a cheetah to accelerate from rest to 40 m/s, we use the formula below.

Formula:

Where:

make t the subject of the equation

From the question,

Givnen:

Substitute these values into equation 2

Hence, The time taken for the cheetah to accelerate from rest to 20 m/s is 2 seconds

Learn more about acceleration: https://brainly.com/question/605631

It's impossible to have a legitimate criminal justice system if there are no

mutually agreed-upon standards of conduct.

justice system are the institutions set up by  the government to ensure

crime is reduced by punishing offenders and ensuring fair hearing is given

to the accused.

In a situation where there are no mutually agreed-upon standards of

conduct, it can lead to anarchy and a lot of conflicts in the area.

Read mire about Justice system here https://brainly.com/question/7207817

Answer is:

Photosynthesis transforms light energy into chemical energy. Cellular respration releasses the carbon dioxide from food into the air.

hope this helps :)

Answer:

Explanation:At the north pole every direction is south or up

Answer:

48.51ms / 174.6 km/h

Explanation:

y = 1/2 x g x t^2         v = g x t          

when y = 120m

120 = 1/2 x 9.8 x t^2

t^2 = 24.49

t = 4.95s

when t = 4.95s

v = 9.8 x 4.95

v = 48.51 m/s = 174.6 km/h

I'd say its realistic. But I don't really know that sry

Answer:

S = V * t

S = 120 km/hr * 10 hr = 1200 km