At what speed do a bicycle and its rider, with a combined mass of 120 kg, have the same momentum as a 1400 kg car traveling at 5.4 m/s?

In a scale model solar system that used a grapefruit to represent the Sun, how far away should you put another grapefruit to represent Alpha Centauri, the next nearest star?

The useful power output of the engine is 2.0 kw. Calculate the rate at which energy is absorbed from the hot reservoir.

How do you calculate average speed?

Describe the difference between physical and chemical changes in terms of what happens to the molecules

A balloon is rising vertically above a level, straight road at a constant rate of 5 ft divided by sec. Just when the balloon is 106 ft above the ground, a bicycle moving at a constant rate of 17 ft divided by sec passes under it.

One step in the production of hydroelectric power involves

A pot is heated on a stove. The water begins to boil rabidly. Which explains why the water is boiling fast?

A galvanometer can be calibrated to read electric A) current B) Voltage C) either of these D) neither of these

Why do responsible consumers use credit and credit cards?

According to Ptolemy's model of the movement of celestial bodies, A. the sun is the center of the universe. B. the earth rotates around the moon. C. planets orbit in circular paths around the earth. D. the earth rotates around the sun.