Physics

Question 1

Density

Answer 1

Mass / Volume

Question 2

Load (N)

Answer 2

Spring constant (k) x Extension

Question 3

Weight (N)

Answer 3

Mass (kg) x G

Question 4

Pressure (pa)

Answer 4

Force / Area

Question 5

Work (J)

Answer 5

Force (N) x Distance (M)

Question 6

Kinetic Energy (KE)

Answer 6

½mv²

Question 7

Gravitational Potential Energy (GPE)

Answer 7

mgh

Question 8

Power (W)

Answer 8

Work done or energy transferred (J) /Time taken (S)

Question 9

Convection

Answer 9

Cold gas/liquid sink, warm gas/liquid rise

Question 10

Speed (Wave/v)

Answer 10

Frequency x Wavelength

Question 11

Frequency

Answer 11

1 / period

Question 12

Refractive Index

Answer 12

Speed of light in vacuum / Speed of light in medium

Question 13

Sin(critical angle of glass)

Answer 13

1 / Refractive index

Question 14

Convex Lens

Answer 14

Converging, object bigger when moved towards

Question 15

Concave Lens

Answer 15

Diverging, image upright and magnified

Question 16

Electromagnetic spectrum vs. Increasing frequency

Answer 16

Microwaves - Radio waves - Infrared - Light - UV - X-rays - Gamma rays

Question 17

Speed of Light

Answer 17

3 x10⁸ m/s²

Question 18

Fluorescence causing Radiation

Answer 18

UV X-ray

Question 19

Range of Audible Frequencies

Answer 19

20 - 20000Hz

Question 20

Speed of Sound

Answer 20

Distance travelled / Time taken

Question 21

High frequency means

Answer 21

High pitch / notes / octave

Question 22

Semi Conductors

Answer 22

Poor conductors when cold, better when warm

Question 23

P.D. (V)

Answer 23

Energy (J) / Charge (C)

Question 24

Charge (C)

Answer 24

Current (A) x Time (S)

Question 25

Resistance (R)

Answer 25

P.D. (V) / Current (A)

Question 26

High Resistance

Answer 26

Long, thin nichrome wire

Question 27

Low Resistance

Answer 27

Short, thick copper wire

Question 28

Energy Transformed (J)

Answer 28

Power(W) x Time taken(S)