Which of the following statements is true?

question 7 options:

both light waves and sound waves are mechanical waves.

both light waves and sound waves are electromagnetic waves.

sound waves are electromagnetic waves and light waves are mechanical waves.

light waves are electromagnetic waves and sound waves are mechanical waves.

Which configuration would produce an electric current? a) rotate a coil of copper wire between two magnets. b) connect a wire between a copper and zinc strip sitting in a beaker of water. c) connect a wire to the (+) positive end of a battery and the other end to a light bulb. d) connect a wire to the negative end of a battery and the other end to a light bulb.

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?

Consider two regions of space containing a static electric field, region a and region b. in region a the equipotential lines are more closely spaced than those in region b. what can be said about the relative strength of the electric field in the two regions? a) the electric field in region a is stronger th