Question

Q. 1 - Write the transformation of energy in the followings :-
a) electric heater, b) heat engine, c) dry cell, d) electric bulb, e) coal

Q. 2 - A porter lifts a luggage of 15 Kg from the ground and puts it on the head 1.7 m above the ground. Find the work done if G = 10 m/s square.
Q. 3 - Explain the forms of energy.
Q. 4 - What is work done? Describe the work done for the force F upto displacement S.

Q. 5 - A force of 100 N acts through a distance of 10 m. Calculate the work done.​​

Answer 1

Answer:

I think it helps you

Explanation:

1.

a) Electrical to mechanical energy

b) Solar energy to electrical energy

c) Electrical energy to heat energy

d) Solar energy to chemical energy

e) Electrical energy to light energy

2. Here, the mass of the luggage is 15 kg, the constant of gravity is 10 m/s^2, and the height is 1.5 m. Therefore, the total amount of work done can be calculated by multiplying these three values, that is, Work= 15 x 10 x 1.5 = 225 Joules.

3. Energy exists in many different forms. Examples of these are: light energy, heat energy, mechanical energy, gravitational energy, electrical energy, sound energy, chemical energy, nuclear or atomic energy and so on. Each form can be converted or changed into the other forms.

4.When the satellite moves around the earth, the force of gravity acts on it along the radius of its orbit. The direction of motion is along the tangent to the orbit at any point. Thus, force acts perpendicular to displacement. Therefore, the work done on the satellite is zero.

5.work = force× displacement

w = 100×10m= 1000 joule.