A man stands still on a moving walkway that is going at a speed of 0.4 m/s to the east. What is the velocity of the man according to a stationary observer?

Team skates 65.0m in 23.2 seconds. What's the average speed?

Why does cupping your hand around your ear improve your hearing?

Out of aluminum, copper, steel, and glass. Which material do you think will be the best thermal conductor?

What should a free-body diagram look like for a skydiver who has opened his parachute and is now slowing down as he falls? There is an arrow up for air resistance and an arrow down for gravity. The arrow up is longer than the arrow down.

A 5.0 MeV (kinetic energy) proton enters a 0.21 T field, in a plane perpendicular to the field. What is the radius of its path?

An object moves from the position + 16m to the position + 43m in 12s. What us the total displacement

Which factor is most important in determining climate? A. Longitude B. Latitude C. Rainfall D. Temperature

We all know that in the earth gravity is there, but why clouds doesn't fall down?

An unknown mass of each of the following substances, initially at 23.0, absorbs 1910 of heat. The final temperature is recorded as indicated. Find the mass of the substance, given: Pyrex glass (55.5)

Which is the relationship between algae and fungus? Options: Parasitism. Commensalism. Mutualism.