Andrea was watching her brother in the ocean and noticed that the waves were coming into the beach at a frequency of 0.777778 Hz. How many waves hit the beach in 27 s? Answer in units of waves.

1. Calculate the weight of a watermelon with a mass of 2 kg on the earth (g = 9.80 m/s2) and on the moon (g = 1.63 m/s2). Use this example to describe the differences between mass and weight and how mass and weight are related. 2.

Advances in technology have reduced the cost of manufacturing MP3 players. If demand does not change, A. more MP3 players will be sold at a higher price. B. fewer MP3 players will be sold at a higher price. C.

The measure of the energy of motion of particles of matter?

Why is the moon tilted

Which of the following is analogous to the pipes in an electrical circuit? A. capacitors storing the incoming charge from the battery B. large resistors causing restrictions to the flow of charge C.

How many earth years does it take mars to orbit the sun

Which represents a system that is almost completely closed?

If many household substances classify as acids or bases what is the ph scale

A protostar forms once the nebular cloud condenses and the core begins

How do whales bats and dolphins use echolocation? A To scare away predators B To attract mates C To orient them selves and find food D To tell animals of there species where they are