The force that accelerates a rocket into outer space is exerted on the rocket by

A. the exhaust gases.

B. Earth's gravity.

C. atmospheric pressure.

D. rocket's wings.

E. none of the above

Larry filled a milk carton completely with water and tightly secured the cap. He then placed it in the freezer. When he looked at the container two days later, he saw that the frozen water had expanded, breaking the container.

Which of the following might be considered a viable application of a radioactive tracer? It can be more then one?

A man stands still on a moving escalator and a woman walks past him in the same direction as the escalator. To a stationary observer, the man has a speed of 0.4 m/s and the woman has a speed of 0.52 m/s.

An embolus can cause which of the following? A. Varicose veins B. Hives C. Stroke D. All of the above

Two billiard balls of equal mass undergo a perfectly elastic head-on collision. One balls initial velocity was 2.00 i m/s and the other ball's initial velocity was - 3.00 i m/s. What are the velocities of both balls after the collision?

On the Celsius scale what temperature does water boil

Suppose that, while lying on a beach near the equator of a far-off planet watching the sun set over a calm ocean, you start a stopwatch just as the top of the sun disappears. you then stand, elevating your eyes by a height h = 1.

A night lamp uses a 30 W bulb. If it is left on continuously for 8 hours, how much energy will it use?

If a drag racer wins the final round of her race by going an average speed of 92.5 m/s in 4.5 seconds, what distance did she cover

An airplane flies due west (i. e. in the-X direction) between two airports. For one-quarter of the distance it travels at 650.0 km/h and the rest at 750.0 km/h. What is the average velocity (not speed) of the airplane?