Kepler's discoveries regarding the motions of the planets were based on the observations of

Copernicus

Artistarchus

Brahe

Ptolemy

The length of a pipe will weigh the most when

Dash is standing on his frictionless skateboard with three balls, each with a mass of 155 g, in his hands. The combined mass of Dash and his skateboard is 65 kg.

What is the difference between a spring and a stream?

The third floor of a house is 8m above street level. How much work is needed to move a 136kg refrigerator to the third floor?

While strolling downtown on a saturday afternoon, you stumble across an old car show. as you are walking along an alley toward a main street, you glimpse a particularly stylish alpha romeo pass by.

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.

Vf=vi+at solve for t