A 68 kg student runs up a flight of stairs that is 7 m high in 9 seconds. Calculate

how much power is used.

Which of the following would you need to measure, not because they are a direct measurement of how well something is being dissolved, but because they are relevant factors into how quickly something dissolves? A. The temperature of the water B.

Which of these is not an example of a physical change? a. a nail rusting b. a rock cracking c. blowing up a balloon d. stretching a piece of clay

What are the three types of boundaries and what landforms come from each

How long does it take to go blind looking at the sun?

Why does the acceleration of a car decrease as the speed increases?

a group of elements that stretch bend and conduct heat and electricity

A rectangular block has dimensions 2.9 cm x 3.5 cm x 10.0 cm. the mass of the block is 615.0 g. what is the volume and density of the block? (answer it with correct numbers of significant figures)

Which of the following are products of cellular respiration? Sunlight Oxygen ATP Water Carbon Dioxide

Do magnetic field lines ever start or end anywhere?

What effect do oceans have on the temperature of coastal areas? A. Ocean breezes warm the coastal land constantly. B. Ocean currents always cool a coastline. C. Ocean winds prevent extremes of temperature on coastal lands. D.