Physics

Question 1

Instrument for detecting electric current

Answer 1

Galvanometer

Question 2

Device that converts mechanical energy to electrical energy

Answer 2

Generator

Question 3

Reduces potential differences

Answer 3

Transformer

Question 4

Electrical device that converts AC to DC which flows in only one direction

Answer 4

Rectifier

Question 5

The process by which power is lost as internal energy in a conductor of resistance

Answer 5

Joule heating

Question 6

What law states that a current is set up even though no batteries are present in the circuit because of the induced current produced by induced emf

Answer 6

Faraday’s Law of Induction

Question 7

The rate at which charge flow through the surface

Answer 7

Current

Question 8

Class of metal and compounds whose resistance decreases to zero when they are below a certain temp, critical temp

Answer 8

Superconductors

Question 9

Electrical insulator that can be polarized by an applied electrical field or changing magnetic field

Answer 9

Dielectric material

Question 10

Change over a single period, the highest point of the wave

Answer 10

Amplitude

Question 11

Wavelengths from longer to shorter

Answer 11

Radiowaves, Microwaves, Infrared waves, Red, Orange, Yellow, Green, Blue, Indigo, Violet, Ultraviolet, X-rays, Gamma rays

Question 12

Mass of electron

Answer 12

9.1 x 10 ^ -31 kg

Question 13

Mass of neutron

Answer 13

1.6 x 10 ^ -27 kg

Question 14

Proton mass

Answer 14

1.6 x 10 ^ -27 kg

Question 15

Snells law of refraction

Answer 15

N1sintheta = n2sintheta

Question 16

Involves the splitting of a heavy nucleus into two nuclei with smaller mass

Answer 16

Nuclear fission

Question 17

Involves the combining of two light nuclei to form heavier, more stable nucleus

Answer 17

Nuclear fusion

Question 18

Constant in Coulomb’s Law

Answer 18

8.9875 x 10 ^ 9 Nm^2/C2

Question 19

Formula for average velocity

Answer 19

Displacement / total time

Question 20

Formula for average speed

Answer 20

Total distance / total time

Question 21

Vx of projectile motion

Answer 21

Vicos theta

Question 22

X in Projectile motion

Answer 22

Vicos🚫T

Question 23

Equations of projectile motion along y axis

Answer 23

Vy=Visin🚫-gt
🔼y= Visin🚫t-(gt^2/2)
Vy^2=(Visin🚫)^2-2g🔼y

Question 24

Formula for Ymax or H (projectile motion)

Answer 24

(Vo^2sin^2🚫)/2g

Question 25

Formula for time (projectile motion)

Answer 25

(2Vosin🚫)/g

Question 26

Unit of frequency

Answer 26

Rad/s

1 rev =2pi rad /s

Question 27

Unid of period

Answer 27

Seconds

Question 28

Unit of frequncy

Answer 28

Hertz or s^-1

Question 29

Unit of energy

Answer 29

Joule (kg m/s^2 - m)

Question 30

Unit of work

Answer 30

Joule (kg m/s^2 - m)

Question 31

Unit of force

Answer 31

Newton (kg m/s^2 )

Question 32

Unit for power

Answer 32

1J/sec

Question 33

Unit of momentum

Answer 33

kg m/s

Question 34

Unit of impulse

Answer 34

Joule (Newton - second) kg m/s^2 -s

Question 35

Unit for Pascal

Answer 35

Pascal (N/m^2) kg m/s^2 1/m^2