Distance between the focal point and the center of the lens
Answer:
average acceleration = 2.74 x 10⁻³ rad/s²
Explanation:
given,
CD playing time = 76 minutes
initial angular speed of CD = 4.10 × 10² rev/min
=
= 42.9 rad/s
final angular speed of CD = 2.90 × 10² rev/min
=
= 30.37 rad/s
average acceleration =
=
average acceleration = 0.00274 rad/s²
average acceleration = 2.74 x 10⁻³ rad/s²
Answer:
here it is...
Explanation:
The friction between the two surfaces is because of the interlocking of the irregularities of the two surfaces. During sliding, contact points do not get enough time to get interlocked properly. Therefore, less friction. ... This explains why sliding friction is less than static friction.
The total kinetic energy of cylinder at that instant is (1/2)mv² where m is the mass of the cylinder.
Kinetic energy is actually acquired by the body when it is travelling with some speed. In this universe energy never creates never destroy, it actually converts from one form to another.
Kinetic energy has various types like:
- Rotational kinetic energy
- Radiant kinetic energy
- Thermal kinetic energy
- Sound kinetic energy
- Electrical kinetic energy.
When any body is holding any particular height, in that case it has potential energy.
There are various theorems which are actually derived from the kinetic energy. One of them is work energy theorem.
We know very well that formula of kinetic energy is (1/2)mv²
Hence, is (1/2)mv².
To know more about kinetic energy, visit here:
brainly.com/question/23522620
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(Complete question) is:
Suppose that at a certain instant the velocity of the cylinder is v and mass is m. What is its total kinetic energy, at that instant?