When the temperature of the air is 50°C, the velocity of a sound wave traveling through the air is approximately?

A. 381 m/s

B. 30 m/s

C. 361 m/s

D. 50 m/s

Whether calculating speed or acceleration, this data is required

In charging by rubbing, electrons move from one material to another because A. substances with very few neutrons have a net positive charge, so they get the extra electrons. O B. heavier substances get rid of electrons so they don't weigh as much.

The formation of an ionic bond involves the? a) sharing of electrons b) transfer of neutrons c) transfer of electrons d) transfer of protons

A cube of mass m1 = 7.7 kg is sitting on top of another cube of the same size and mass m2 = 1.4 kg while they are both in free-fall.

Determine the pressure acting on a surface of area equal to 2 m2 if the force applied to the surface is 4 N

Use what you have learned so far about heat transfer to explain how hot rocks can be used to make steam?

Why is copper a good conductor?

Sketch of the distance vs time graph for a car with constant velocity

3. Applying Concepts Explain why a canoe that has hollow, water- tight compartments on its ends won't sink, even if it is capsized.

If two forces of equal magnitude act on an object that is hinged at a pivot, the force acting farther from the pivot must produce the greater torque about the pivot. A) true B) false C) unable to decide without knowing the shape of the object