Answer:
Because it is said that the earth rotates and revolves around the sun and moon so it is impossible for the earth not to be spinning.
Explanation:
Answer:
123.61 J
Explanation:
PE = KE
mgh = 1/2 mv2.
(2.80)(9.81)(4.50)=123.606J
Answer:
45 m / s North is a valid vector reading for an object.
Explanation:
Then velocity will be defined by x km / hr North. And, magnitude of velocity defines the speed of the body. Although this tells the speed, but there is no description for the direction, so it's not a vector reading
Explanation:
To determine the amount of electrical charge that flows in a circuit, you need to know the current flow and how long it flows for. The equation is: charge (coulomb, C) = current (ampere, A) × time (second, s). For example, if a a current of 20 A flows for 40 s, the calculation is 20 × 40.