Which of the following materials is most likely to absorb sound in a concert hall?

A.) fiberglass

B.) ceramic tile

C.) asphalt

D.) concrete

Why do balloons make noise when they pop?

Newton's laws of motion work best for objects under which conditions. a. very slow and fast moving. b. very large and slow moving. c. very small and slow moving. d. very large and fast moving.

How do prevailing winds control precipitation totals in a region? Check all that apply. They cause oceanic winds to carry water vapor. They move warm air masses in certain directions. They increase the occurrence of droughts in the winter.

A machinist turns the power on to a grinding wheel, at rest, at time t = 0 s. The wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 56 rad/s.

A microwave oven with a power of 1.4 kW is used for 0.10 hours. How much electricity did the power company provide for the microwave?

If two parallel light rays hit a plane mirror, what will be their orientation to one another after they reflect? a. they will remain parallel. b. they will be perpendicular. c. it depends on the initial spacing between the light rays. d.

To extend the electrical system between the main panel and the secondary panel, the electricians used A. Receptacles B. Circuit breakers. C. feeders. D. insulators

Men in the age of 18-34 years need to be able to run a marathon in 3 hours and 10 minutes to qualify for the Boston Marathon. How many seconds is this? Show your work.

What is the center of our solar system?

A - 4.0-µC charge is located 0.45 m to the left of a + 6.0-µC charge. What is the magnitude and direction (to the right or to the left) of the electrostatic force on the positive charge?