Question

C.True/False: 1×7=7

1. The weight of an object is a constant quantity.

2. A book lying on the study table has no energy.

3. Only living things produced sound.

4. The SI unit of amplitude is metre.

5. For uniform motion the speed of the moving body is always constant.

6. There is always a loss of energy and total energy is not conserved.

7. Sound is a longitudinal wave.​

Answer 1

Answer:

1.true

2.true

3.false

4.true

5.false

6.tru7.false

Answer 2

Answer:

1. False

2. May be True

3. False

4. True

5. True

6. May be false

7. May be true