Physics equations

Question 1

What is the equation linking kinetic energy, mass and speed?

Answer 1

E=1/2mv^2

Question 2

What is the equation for gravitational potential energy?

Answer 2

GPE = mgh

Question 3

What is the equation linking power to work done and energy transferred?

Answer 3

power = work done/time = energy transferred/time

Question 4

What is the equation for efficiency?

Answer 4

useful output / total input

Question 5

What is the equation linking density mass and volume?

Answer 5

density = mass/volume

Question 6

What is the equation linking mass, weight and gravity?

Answer 6

weight = mass x gravity

Question 7

What is the equation linking work done, force and distance?

Answer 7

work done = force x moved along the line of action of the force

Question 8

What is the equation linking extenstion force and spring constant?

Answer 8

force = spring constant x extension

Question 9

What is the equation for the moment of a force?

Answer 9

moment = force x distance

Question 10

What is the equation linking wave speed, wavelength and frequency?

Answer 10

wave speed = frequency x wavelength

Question 11

What is the equation linking current, charge flow and time?

Answer 11

charge flow = current x time

Question 12

What is the equation linking p.d., resistance and current?

Answer 12

p.d. = current x resistance

Question 13

How do you work out total resistance?

Answer 13

total resistance = resistance of component 1 + resistance of component 2

Question 14

What is the equation linking current current, power and p.d.?

Answer 14

Power = current x potential difference

Question 15

What is the equation linking current, power and resistance?

Answer 15

power = current^2 x resistance

Question 16

What is the equation linking energy transferred, charge flow and p.d.?

Answer 16

energy transferred = charge flow x potential difference.