Formulas

Question 1

How do you calculate density

Answer 1

Density (Kg/m3) = mass (kg) ➗volume(m3)

Question 2

Calculating the change in thermal energy with specific heat capacity?

Answer 2

Change in thermal energy (J) = mass(kg) ✖️ specific heat capacity (J/Kg°C) ✖️ change in temperature (°C)

Question 3

Calculating the thermal energy needed for a change in state with specific latent heat

Answer 3

Thermal energy for a change in state (J) = mass(kg) ✖️ specific latent heat (J/Kg)

Question 4

How do you calculate acceleration

Answer 4

Acceleration (m/s2) = change in velocity (m/s) ➗ time (s)

Question 5

Calculating acceleration if you know the final and initial velocity

Answer 5

Acceleration(m/s2) = final velocity(m/s) - initial velocity(m/s)
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Time (s)

Question 6

Calculating speed

Answer 6

Speed = distance ➗ time

Question 7

Calculating speed from a graph

Answer 7

Speed = change in distance ➗ time

Question 8

Calculating velocity from a graph

Answer 8

Velocity = change in displacement ➗ time

Question 9

Calculating acceleration from a graph

Answer 9

Acceleration = Change in velocity ➗change in time

Question 10

Equation of motion

Answer 10

(Final velocity)^2 - (initial velocity p)^2 = 2 ✖️acceleration ✖️ distance

Question 11

Calculating final velocity from the equation of motion

Answer 11

(Final velocity)^2 = (2✖️acceleration ✖️distance) + (initial velocity)^2

Question 12

How do you calculate kinetic energy

Answer 12

Kinetic energy (J) = 0.5 ✖️ mass (kg) ✖️(speed)^2

Question 13

Calculating speed from kinetic energy

Answer 13

kinetic energy = ✔️(kinetic energy)➗(0.5✖️mass)

Question 14

How do you calculate charge flow

Answer 14

Charge flow (C) = current (A) ✖️time (s)

Question 15

How do you calculate current?

Answer 15

Current (A) = charge (C)➗ time (S)

Question 16

How do you calculate force (Newton’s second law)

Answer 16

Force (N) = mass (kg)✖️acceleration (m/s2)