In an elastic collision, momentum is conserved as well as well as?
velocity
kinetic energy
potential energy
speed
Correct answer is B
An elastic collision is an encounter (collision) between two bodies in which the total kinetic energy of the two bodies remains the same.
Which of the following quantities is a vector?
Volume
Momentum
Energy
Speed
Correct answer is B
No explanation has been provided for this answer.
The time rate of increase in velocity is called
force
momentum
acceleration
speed
Correct answer is C
No explanation has been provided for this answer.
1600
1200
200
2400
Correct answer is A
Let the count rate at zero time be N
N \(\frac{3 min}{\to}\) \(\frac{N}{2}\) \(\frac{3 min}{\to}\) \(\frac{N}{4}\)
\(\frac{N}{4}\)
= 400
N = \(\frac{400}{N/4}\) x N
= 1600
I and II
III and IV
I and III
II and IV
Correct answer is C
Examples of electromagnetic waves are radio waves, X-rays, gamma rays, light rays, etc