science (phys)

Question 1

what are the disadvantages of having a windmill

Answer 1

takes up a lot of space and costs a lot of money

Question 2

what is the equation for distance

Answer 2

distance=speed/time

Question 3

what is the equation for speed

Answer 3

speed=distance/time

Question 4

what is the equation for time

Answer 4

times=distance/speed

Question 5

what are the 8 energy stores

Answer 5

gravity elastic electrostatic nuclear magnetic chemical thermal kinetic

Question 6

what are the 4 energy transfers

Answer 6

electrical, thermal , mechanical, radiation

Question 7

what is newtons 1st law of motion

Answer 7

we can’t ‘lose’ or ‘gain’ energy: Energy can be transferred usefully, stored but cannot be created or destroyed.

Question 8

what is newtons 2nd law of motion

Answer 8

Newton’s second law states that the acceleration of an object is proportional to the force acting on it, and inversely proportional to its mass.

Question 9

what is newtons 3rd law of motion

Answer 9

when two bodies interact, they apply forces to one another that are equal in magnitude

Question 10

does light travel in straight lines and bounces of walls

Answer 10

YES