SL ARORA-Work, Energy and power-EXERCISE
- Can P.E. of an object be negative?
Text Solution
|
- Out of joule, calorie, kilowatt and electron volt, which one is not th...
Text Solution
|
- Define mechanical energy and law of conservation of mechanical energy....
Text Solution
|
- What type of energy is stored in the spring of a watch?
Text Solution
|
- When an air bubble rises in water, what happens to its potential energ...
Text Solution
|
- What kind of energy transformations take place at a hydroelectric powe...
Text Solution
|
- A spring is cut into two equal halves. How is the spring constant of e...
Text Solution
|
- Define power and its SI unit.?
Text Solution
|
- The unit same as the watt second.
Text Solution
|
- What are the dimensions of power ?
Text Solution
|
- How many watts are there in one horse power ?
Text Solution
|
- Name the physical quantity, which is expressed as force times velocity...
Text Solution
|
- For a planet revolving round the sun, when it is nearest to the sun
Text Solution
|
- What is a conservative force ? Give one example.
Text Solution
|
- Which physical quantities are conserved in an elastic collision?
Text Solution
|
- Which physical quantity is conserved in both, elastic and inelastic co...
Text Solution
|
- If two bodies stick together after collision. Will the collision be el...
Text Solution
|
- A bullet gets embedded in a wooden block. Where does its KE go?
Text Solution
|
- Give three examples of forces which are conservative in nature.
Text Solution
|
- Friction is non-conservative force. How ?
Text Solution
|