equations

Question 1

speed

Answer 1

=d/t

Question 2

acceleration

Answer 2

=v-u/t

Question 3

weight

Answer 3

=m x g

Question 4

density

Answer 4

mass/volume

Question 5

hookes law

Answer 5

f = kx (k is constant)

Question 6

force

Answer 6

=m x a

Question 7

moment

Answer 7

=force x perpendicular distance

Question 8

momentum

Answer 8

= mass x velocity

Question 9

kinetic energy

Answer 9

= (1/2)x (mass) x (velocity)

Question 10

gravitational potential energy

Answer 10

mass x gravity x change in height

Question 11

efficiency

Answer 11

= output/input x100

Question 12

pressure

Answer 12

force / area

Question 13

pressure liquid

Answer 13

p = hpg

Question 14

work

Answer 14

= force x distance

Question 15

power

Answer 15

= energy/time

Question 16

thermal capacity or heat energy

Answer 16

=mass x specific heat capacity x change in temperature

Question 17

heat energy (Q)

Answer 17

=mass x latent heat

Question 18

velocity of wave

Answer 18

=frequency x wavelength (lambda)

Question 19

refractive index (n)

Answer 19

=sin i/sin r

Question 20

I (current

Answer 20

= Q(charge)/t (time)

Question 21

R (resistance

Answer 21

= V(voltage)/I(current)

Question 22

Vs(volts in secondary)/Vp(volts in secondary)

Answer 22

=Ns(number of turns in secondary)/Np(number of turns in primary)

Question 23

Ip(current in primary) x Vp(volts in primary)

Answer 23

=Is(current in secondary)x Is(current in primary)