This time, Bob rides the first mile at 32 mph, and the second mile at 60 mph. Alice rides the entire two miles at the average of the two speeds. Calculate Bob's time minus Alice's time
in minutes.

Acar of mass m goes around a banked curve of radius r with speed v. if the road is frictionless due to ice, the car can still negotiate the curve if the horizontal component of the normal force on the car from the road is equal in magnitude to 101) a) mv2/r b) mg/2. d) mg e) tan[v2/(eg)]

The least penetrating form of radiation is

In a hydrogen molecule there are a total of four charges, 2 protons in the two nuclei, and 2 electrons. how many unique charge-pairs are there (without double counting)?