A2.44 x 10^3 kg car requires 5.3 kj of work to move from rest to some final speed. during this time, the car moves 27.4 m.
neglecting friction, find
a) the final speed
b) the net horizontal force exerted on the car

Astudent looks at ocean waves coming into the beach. an ocean wave with more energy will a) have a greater height. b) have a greater period. c) travel toward the beach faster. d) strike the beach with greater frequency.

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f

Why is rain likely when warm, moisture-laden air meets cold air? a) the lighter warm air will rise and cool down, causing condensation and rain. b) the cold air moves faster and pushes the warm air away, causing condensation and rain. c) the moisture in the warm air condenses on contact with the cold air, causing rain to fall. d) the cold air mixes with the warm air, reducing its temperature causing moisture to condense.