Equation's

Question 1

Show The formula for Work done

Answer 1

Work Done (Joules) = Force (Newtons) x Distance Moved in direction of force (meter's)
W=Fd

Question 2

Show The formula for energy transferred Power

Answer 2

Energy transferd(Joules) = power(watts) x time(seconds)
E=Pt

Question 3

Show The formula for Weight

Answer 3

Weight (Newtons) = Mask (kg) x Gravity (10 N/kg)

W=mg

Question 4

Show The formula for Gravitational Potential Energy

Answer 4

Gravitation Potential Energy (Joules) = Mass (kg) x Gravity (10 N/kg) x Hight (meter’s)
Ep = mgh

Question 5

Show The formula for Kinetic Energy

Answer 5

Kinetic energy (Joules) = ½ x mass (kg) x velocity( meter’s per second) ²

Question 6

Show The formula for Efficiency (power)

Answer 6

Efficiency = (Useful energy out / Total energy in) x 100

Question 7

Show The formula for potential difference power (not V=IR)

Answer 7

Power(watts) = potential difference(voltage) x current(amps)

P=IR

Question 8

Show The formula for current power

Answer 8

Power(watts) = current(Amps) ^2 * resistance(ohms)

P=(I^2)r

Question 9

Show The formula for potential diffrence

Answer 9

Potential diffrence(volts) = current(Amps) x resistance(Ohms)
V=IR

Question 10

Show The formula for charge flow

Answer 10

Charge flow(collombos) = current(Amps) x time(seconds)
Q=It

Question 11

Show The formula for charge flow energy transferred

Answer 11

Energy transferd = charge flow x potential difference

E=QV

Question 12

Show the equation for frequency

Answer 12

Frequency = (1/time period)