Energy, Work, And Power

Question 0

What is energy

Answer 0

Energy is the ability to do work

Question 1

What is work

Answer 1

Work is done when when energy is transferred or transformed from one form Ito another

Question 2

What is power

Answer 2

The rate of doing work

Question 3

Describe the energy transfers done when a ball is dropped

Answer 3

CBa for now

Question 4

What is the conservation of enery principle

Answer 4

Energy cannot be gained or lost, it can only be transformed from one form into another

Question 5

What is power measured in

Answer 5

Watts (W)

Question 6

Equation for power

Answer 6

P= work done/ time taken

Question 7

Efficiency equation

Answer 7

Useful energy output / total energy output x 100

Question 8

What is the equation for KE

Answer 8

KE = 1/2 m (v)^2

Question 9

GPE =

Answer 9

Mgh

Mass x gravity x height

Question 10

What is absolute zero

Answer 10

The point where a gas has the least amount of KE and pressure has stopped decreasing . At -273 degrees celcius

Question 11

What is another name for -273degress celcius

Answer 11

Absolute zero

Question 12

Kelvin temp scale starts from

Answer 12

-273 degrees celcius

Question 13

What is resultant force

Answer 13

The net overall force acting on a body

Question 14

Forces can do what four things

Answer 14

Change 
Direction 
Speed
Size
Shape

Question 15

What is Newton’s second law

Answer 15

The acceleration of an object is directly proportional to the resultant force acting on it

Question 16

What equation works out work

Answer 16

Work = force x distance

Question 17

What is kinetic energy

Answer 17

The energy possessed by moving objects

Question 18

How to work out force

Answer 18

Fore = mass x acceleration

Question 19

How can I work out average kinetic energy of a gases molecules

Answer 19

Kelvin temp scale is proportional to the av kinetic energy of the gas