Heating the air will

A. not affect the speed of sound

B. block the movement of sound

C. slightly increase the speed of sound

D. sharply decrease the speed of sound

A soccer player kicks a ball, giving it an initial velocity of 9.0 m/s in the positive x - direction. Because of the wet grass and dirt, the ball slows uniformly to 3.00 m/s when it has travelled 30.0 m.

The molecular mass of sodium oxide (Na2O) is

A boy pushes a box with a horizontal force across a rough surface. He then changes the direction of his force to be diagonal into the ground. He pushes with the same force as before.

100 ml of water is initially at 20°C. 30,000 J of heat is added to the water. What is temperature change for the water?

The idea that states are unitary actors acting under anarchy and the structure of the system shapes their behavior is associated with which theory?

Double the resistance of the resistor by changing it from 10 Ω to 20 Ω. What happens to the current flowing through the circuit?

Who would most likely be required to work with sodium hydroxide? A: a plumber B: a gardener C: a bricklayer D: a mechanic

A roller coaster is entering a vertical loop which has a radius of 25.0 m. If the coaster is traveling at 45.0 m/s as it enters the loop, how much is the centripetal force that you experience? (Assume your mass to be 75.

Which best describes tropical continental climate during the summer? A. clear, dry weather, B. cloudy, wet weather, C. cold, dry weather, D. hot, dry weather

At the beach, describe where or when you would see wave fronts. How are wave fronts useful to surfers?