Distance from the reference point
When we double the distance between a source of light and the
surface on which it falls, the amount of illumination on the surface
decreases to <em>one fourth (1/4, 0.25))</em> of the original illumination.
C. A child can pass through the stages in any order.
Answer:
a. 125 kJ
Explanation:
Her total energy is the same as the potential energy she had at the top of the hill:
PE = mgh
= (52 kg)(9.8 m/s^2)(245 m) = 124,852 J
≈ 125 kJ . . . . matches choice A
_____
After skiing down 112 m, some of her initial energy is converted to kinetic energy, and some remains as potential energy. We assume the ski slope is essentially frictionless, and air resistance is negligible.
Answer:
D) Higher Frequency
Explanation:
Higher frequency because it says a vehicle “towards” the officer
