Answer:
1000 J of thermal energy is generated.
Explanation:
The attached figure shows the whole scenario. It consists of three types of energies i.e. Gravitational Potential Energy, Kinetic Energy and thermal energy.
We know that the energy of a system remains conserved. In this case, the gravitational potential energy is the sum of kinetic energy and the thermal energy.
GPE = KE +TE
8000 J = 7000 J + TE
TE = 1000 J
So, the thermal energy is 1000 J. Hence, this is the required solution.
Answer:
Temperature increase = 2.1 [C]
Explanation:
We need to identify the initial data of the problem.
v = velocity of the copper sphere = 40 [m/s]
Cp = heat capacity = 387 [J/kg*C]
The most important data given is the fact that when the shock occurs kinetic energy is transformed into thermal energy, therefore it will have to be:
Answer:
T = T
Explanation:
Time period of a simple pendulum is not affected by the mass of the bob. As we know, . There is no factor of mass affecting when we derived the equation. The basic reason behind the time period is not affected is because of mass dependence on angular acceleration. As the mass increases the acceleration increase and the Time Period remains constant.