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topjm [15]
3 years ago
10

When is thermal equilibrium achived between two identical objectsneed help ASAP

Physics
1 answer:
dlinn [17]3 years ago
8 0

Answer: When two objects in contact with each other are at different temperatures, they are said to be in thermal equilibrium.

Explanation: . When two objects not in contact with each other are at the same pressure, they are said to be in thermal equilibrium.

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A proton and an electron enter perpendicular to the direction of the magnetic field. The speed of the proton is twice the speed
Nezavi [6.7K]

Answer:

The force on the proton will be twice in comparison with the force experienced by the electron.

Explanation:

The magnetic force acting on the moving charge particle is perpendicular to the velocity as well as the magnetic field. The factors upon which the magnitude of the force is depending and proportional are as follows:

1 Magnitude of the charge particle.

2 Magnitude of the velocity of moving charge.

3 Magnitude of magnetic field.

4 Sine of angle between the velocity and magnetic field.

As far as direction is concerned, it can be find out by right hand rule.

Lets consider,

Speed of electron = Ve

Speed of proton vp= 2ve

Magnitude of the force F = qvBsin∅

Force acting  on electron Fe = qe.ve.Bsin∅

Force acting on proton Fp = qp.vp.Bsin∅

                                       Fp = -2 qe.ve.Bsin∅

                                       Fp = -2Fe

Negative sign shows the direction of Force on proton is opposite to the direction of force on electron.

3 0
3 years ago
A violin string has a standard length of 32.8 cm. It sounds the musical note A (440 Hz) when played without fingering. How far f
Rus_ich [418]

Answer:

The finger has to be placed at 5.25cm

Explanation:

The steps and appropriate formula in musical instrument is as shown in the attachment.

5 0
3 years ago
A 6.20 g bullet moving at 929 m/s strikes a 850 g wooden block at rest on a frictionless surface. The bullet emerges, traveling
nekit [7.7K]

Answer:

(a) Final speed of block = 3.2896 m/s

(b) 6.7350 m/s is the speed of the bullet-block center of mass?

Explanation:

Given that:

Mass of bullet (m₁) = 6.20 g

Initial Speed of bullet (u₁) = 929 m/s

Final speed of bullet (v₁) = 478 m/s

Mass of wooden block (m₂) = 850g

Initial speed of block initial (u₂) = 0  m/s

Final speed of block (v₂) = ?

<u>By the law of conservation of momentum  as:</u>

<u>m₁×u₁ + m₂×u₂ = m₁×v₁ + m₂×v₂</u>

6.20×929 + 850×0 = 6.20×478 + 850×v₂

Solving for v₂, we get:

<u>v₂ = 3.2896 m/s</u>

Let the V be the speed of the bullet-block center of mass. So,

V = [m₁* u₁]/[m₁ + m₂]  (p before collision = p after collision)

   = [6.2 *929]/[5.2+850]

<u>V = 6.7350 m/s </u>

7 0
3 years ago
This is a velocity versus time graph of a car starting from rest. If the area under the line is 10 meters: what is the correspon
shtirl [24]

Answer: The correct answer is option (D).

Explanation:

The area under the line is 10 meters that is displacement which means that area enclosed by the right angled triangle is 10 unit squares.

So, the it can be written as:

\text{area of triangle}=\frac{1}{2}\times velocity\times time

10=\frac{1}{2}\times 2.0 m/s\times time

time =10 seconds

Hence the, the correct answer is option (D).

6 0
3 years ago
a wave's amplitude is 0.5 meters. if its amplitude is increased to 1 meter, how much does its energy change?​
AfilCa [17]
The energy becomes 4 times greater.
5 0
3 years ago
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