A chunk of paraffin (wax) has a mass of 50.4 grams and a volume of 57.9 cm3. What is the density of

paraffin?

The entire electromagnetic spectrum can be divided into seven bands: radio, microwave, infrared, visible, ultraviolet, X ray, and gamma ray (from longest to shortest wavelength).

When a cannon is fired, how does the size of the force of the cannon on the cannonball compared with the force of the cannonball on the cannon?

Which has greater kinetic energy: a tennis ball that has a mass of 0.3kg travelling at 80m/s or a train that has a mass of 10000kg and is moving at 0.1m/s? tennis balltrain

An EM wave has frequency 9.90*10^14 Hz. What is its wavelength? How would we classify it?

Which characteristics apply to direct currents

Explain why the friction force between two surfaces increases if the force is pushing the surfaces together increases.

As energy moves in waves through the water, the water moves a. in waves toward shore. c. in the direction of the waves. b. in a small circular movement. d. against the current.

Which of the following values represents an index of refraction of an actual material? A. 0 B. 1 / 4 C. 5 / 4 D. 1 / 2

Which statement best describes the effect of scientific advances on society? A. They always have a positive impact on society. B. They are inspired by the needs of society. C. they do not affect society beyond the community level. D.

Which way does wind blow, A. horizontally, B. Only from east to west, C. Only from West to east, D. vertically