How is sound energy produced

A. Vibrating objects

B. objects being heated

C. Temperature differences

D. Stationary objects

Ocean Currents: List two ways currents affect life on earth.

Which is described as the flow of charge particles? Electric field frictional force electric current gravitational force

Which is true? A. Light waves do not change speed as they travel from air through water. B. Light waves speed up as they travel from the air through the water C. Light waves slow down as they travel from the air through the water.

Which statement is true about how objects appear to bend that are partially submerged in water? They appear to bend at the surface due to reflection. They appear to bend at the surface due to refraction.

If you look at a star that is 14 light yaers away, how long ago did the light you are seeing leave the star

Why do atoms move at different speeds depending on wether they are liquids or solids

What are the arrangement of resistors in series

A cell provides 6 V to an LDR. The current through this LDR is measured and is found to be 3 A. What is the resistance of the LDR?

A car travels along eastward with a constant velocity. the magnitude of the acceleration of the car is

What is the weight of a 65 kg astronaut on mars?