Answer:
Volume strain is 0.02
Explanation:
Volume strain is defined as the change in volume to the original volume.
It is given that,
Initial volume of the plastic box is 2 m³
It is then submerged below the surface of a liquid and its volume decreases to 1.96 m³
We need to find the volume strain on the box. It is defined as the change in volume divided by the original volume. So,

So, the volume strain on the box is 0.02.
Answer:
5.2x10^-25
Explanation:
Time=(1.56x 10^-16)÷(3x10^8)
Answer:
Part a)

Part b)

Part c)

Part d)

Part e)

Part f)

Explanation:
Part a)
As we know that the maximum angle deflected by the pendulum is

so the maximum height reached by the pendulum is given as

so we will have



now gravitational potential energy of the pendulum is given as



Part b)
As we know that there is no energy loss while moving upwards after being stuck
so here we can use mechanical energy conservation law
so we have




Part c)
now by momentum conservation we can say



Part d)
Work done by the bullet is equal to the change in kinetic energy of the system
so we have



Part e)
recoil speed of the gun can be calculated by momentum conservation
so we will have



Part f)
Total energy released in the process of shooting of gun



Answer:
F=ma is the relationship where, F is force, m is mass and a is acceleration.
Newton's second law states that the unbalanced force applied to the object accelerates the object which is directly proportional to the force and inversely to the mass.
If we apply force to a toy car then It will accelerate.
This is how Newton's second law of motion is verified.
Answer:
Explained
Explanation:
i)Two spheres hanging from nylon threads attract each other because either the two spheres are charged with opposite sign or only one of the spheres is charge so the other would be charge by induction of the charged sphere and hence attract each other.
ii)However, when they are touched the charges will be rearranged among the two sphere such that the two sphere have exact same magnitude and sign of charge and now they will repel each other or the magnitude of charges on the two spheres become zero and they neither attract or repel each other.