4. Explain macroscopic and microscopic forms of energy.

An Achilles tendon at resting length was stretched until it had stored 44 J of energy. If the stiffness of the tendon was 250 kN/m, how much deformation was experienced by the tendon?

Figure below shows the power consumption of a certain household in 1 day. Calculate the total energy consumed in kWh

(a) Differentiate between Mechanical Work and Mechanical Power.

Calculate the work required to stretch the following springs 0.5 m from their equilibrium positions. Assume Hooke's law is obeyed. a. A spring that required a force of 50 N to be stretched 0.1 m from its equilibrium position. b. A spring that required 40 J of work to be stretched 0.4 m from its equilibrium position.

On a molecular level, heat can be thought of as representing changes in the positions of the energy levels of a system. True False

Laws that are used to Transformation of Energy ?

3. What is the energy equivalent of 1 lb (0.453 kg) of mass? What is the mass equivalent of the electric energy produced by a 1,000 MW nuclear power plant for an entire year?

Explain energy transfer by radiation in more details

Find the potential energy of a 2 kg rock held 3 meters above the ground.