10th Class Physics Notes for Pdf Download chapter #8 work power and energy for Sindh Karachi all boards short long question and MCQs.
Does a hydrogen-filled balloon possess any potential energy?
Yes, a hydrogen-filled balloon possesses potential energy because hydrogen gas is lighter than air and light gases move in the upward direction against gravity. So, a hydrogen-filled balloon will move in the upward direction and will get higher. So, this balloon will have potential energy.
What is energy, name the different forms of energy?
ENERGY: Whenever work is done on an object, it gains energy. The energy of a body is its capacity for doing work. Thus energy and work are the same and both are measured in the same units. Whenever we do work on a body, we store in it an amount of energy equal to work done.
There are two forms of energy, such as: i) KINETIC ENERGY: When a body is capable of doing work by virtue of its motion, the energy is called kinetic energy or the energy associated with a mass due to its motion is called kinetic energy. ii) POTENTIAL ENERGY: When a body is capable of doing work by virtue of its position, or special configuration the energy is called potential energy. There are different kinds of potential energy such as: 1) GRAVITATIONAL P.E: The energy associated with a mass when lifted to a height in the earth’s gravitational field is called gravitational potential energy. 2) ELASTIC POTENTIAL ENERGY: The energy stored in a stretched or compressed elastic material such as a spring is called elastic potential energy.
Work Power and Energy Pdf Download for Sindh Board