Work And Power

Question 1

Kinetic

Answer 1

Moving objects

Question 2

Thermal

Answer 2

Hot objects

Question 3

Chemical

Answer 3

Releases energy by a chemical reaction

Question 4

Gravitational potential

Answer 4

Anything in a gravitational field (falling objects)

Question 5

Elastic potential

Answer 5

Anything stretched

Question 6

Electrostatic

Answer 6

2 charges attracting or repelling each other

Question 7

Magnetic

Answer 7

2 magnets attracting or repelling each other

Question 8

Nuclear

Answer 8

Releases energy from atomic nuclei in nuclear reactions

Question 9

Work done definiton

Answer 9

Energy transferred

Question 10

Work done equation

Answer 10

Work done = force ✖️ distance moved

Question 11

1 watt=

Answer 11

1 joule of work done every second

Question 12

Power definition

Answer 12

How much work done per second

Question 13

Power equation

Answer 13

Power = energy transferred ➗ time taken

Question 14

Scalar

Answer 14

Magnitude

Question 15

Vector

Answer 15

Magnitude and direction

Question 16

System?

Answer 16

Object or group of objects

Question 17

A closed system?

Answer 17

When the net energy change is zero

Question 18

How can energy be transferred?

Answer 18

Heating, forces, doing work or electrical equipment

Question 19

When a system changes what happens?

Answer 19

Energy is transferred in or out

Some dissipates and is stored in rubbish ways