2019 Paper

Question 1

Wave practical how could the apparatus be changed to share one complete weight without reducing the frequency

Answer 1

Add more weights

Question 2

Explain the possible dangers caused by a large the acceleration of the vehicle

Answer 2

Brakes overheating causing a skid

Question 3

Explain where the two iron rods in the celluloid move the part when it’s turned on

Answer 3

They become charged with the same polarity

Question 4

Inertia

Answer 4

The tendency of an object to continue in its state of rest or motion

Question 5

Combined equation for momentum

Answer 5

Force = mass x velocity/ time

Question 6

Skydive 1st jumps out of plane

Answer 6

Initially the air resistance is less than the way to the skydiver accelerates
As he accelerates the air resistance increases
Until the air resistance is equal to the weight
The skydiver has reach terminal velocity

Question 7

Microphone works

Answer 7

Sound causes diaphragm to vibrate
The vibrations caused the coil to vibrate
The coil cuts magnetic field line
So potential difference is induced