Sound waves in air are a series of

a. periodic disturbances.

b. periodic condensations and rarefactions.

c. high - and low-pressure regions.

d. all of the above E. none of the above

lets say that an object of a certain volume has a certin mass. what happens to its mass when you double its volume?

Distinguish For a science fair project, Ina wanted to investigate if flower color influenced the attraction of butterflies and moths. She made the table after observing the visits of butterflies and moths over a one-day period.

Two energy resources that do not depend on the sun's energy

Sandy is standing in line for kanye west tickets. the line wraps around the block, spilling into the streets and crowding store windows. sandy is part of a (n) :

A specific example of how light year is used in space exploration. Pick one object in space (the nearest star, the nearest galaxy, the edge of the universe, etc.

Venus's average distance from the sun is 0.72 AU and Saturn's is 9.54 AU. Calculate the orbital velocity of Venus and Saturn around the sun. (The mass of the sun is 1.99 X 10^30 KG. an AU is 1.50 X 10^11 M.

Caleb's parent drove him to a swim meet 208 km away. It took them 2 hours, which included a 15-minute break to refuel. What was their average driving speed?

Why is thermal energy from the Sun transferred to Earth through electromagnetic waves instead of any other type of thermal energy transfer? Electromagnetic waves can carry energy through matter. Electromagnetic waves can travel through empty space.

Why do different elements emit different colors of light

In an experiment, 108 J of work was done on a closed system. During this phase of the experiment, 79 J of heat energy was added to the system. What was the total change in the internal energy of the system?