Physics AP3

Question 1

2 types of drag

Answer 1

air resistance and water resistance

Question 2

how to reduce drag

Answer 2

streamlining

Question 3

what affect can forces have on objects

Answer 3

change their motion, deform them

Question 4

when you apply a force to a rope what is the name given to the force produced in the rope

Answer 4

tension

Question 5

hookes law

Answer 5

in a spring if you double the force the extension doubles, extension is directly proportional to force

Question 6

how do fluids exert pressure on a surface

Answer 6

because of collisions of the molecules with the surface

Question 7

equation that links area force and pressure

Answer 7

pressure = force / area

Question 8

pressure unit

Answer 8

n/m2

Question 9

name given to turning effect of a force

Answer 9

moment

Question 10

equation that links distance, force and moment

Answer 10

moment=distance x force

Question 11

equation that links energy power and time

Answer 11

energy = power x time

Question 12

equation that links distance moved, work done and force

Answer 12

work done = force x distance moved

Question 13

unit for energy

Answer 13

joules

Question 14

ways of transferring energy between stores

Answer 14

heating, radiation, forces, electricity

Question 15

reasons why energy is lost in an energy transfer process

Answer 15

friction, air resistance, heating, electircal resistance

Question 16

things that affect thermal energy of object

Answer 16

mass, temperature, what it is made of.

Question 17

what does conduction occur in

Answer 17

solids

Question 18

what does convection occur in

Answer 18

fluids

Question 19

what do waves transfer

Answer 19

energy

Question 20

is light a longitudinal or tranverse wave

Answer 20

transverse

Question 21

equation links distance, speed and time

Answer 21

speed = distance / time

Question 22

euation links gravatational field strength, mass and weight

Answer 22

weight = mass x gf

Question 23

equation links current, potential difference and resistance

Answer 23

pd = current x resistance

Question 24

equation links energy, power, time

Answer 24

power = energy / time

Question 25

what is current

Answer 25

the charge flowing per second

Question 26

what is potential difference

Answer 26

the energy transferred by the charge

Question 27

what is resistance

Answer 27

something that slows down the charged particles

Question 28

objects can become positivley or negativley charged by transferring _____

Answer 28

electrons