The velocity a rocket must reach to establish an orbit around Earth is called

a. thrust velocity.

c. artificial velocity.

b. orbital velocity.

d. escape velocity.

When an ice pack is applied to an injury, thermal energy from the injured area transfers to the ice, causing the blood vessels within the area to constrict, which reduces the swelling. How is thermal energy transferred in this scenario? 1.

You sit at the middle of a large turntable at an amusement park as it is set spinning on nearly frictionless bearings, and then allowed to spin freely.

An object of the same mass has three different weights at different times. Which statement is possible? • The object gains matter and then loses it.

You use an inclined plane to move furniture into a truck. You perform 105 kJ of work, but only do 88 kJ of useful work. What is the efficiency of the inclined plane?

Which of the following is a source of water pollution? a. sewage b. oil spills c. fertilizers d. all of the above

A baseball player was hit by a baseball in the left eye and complains of double vision. What should you do? A. Restrict spinal movement B. Assess pupillary response C. Perform a detailed exam D. Apply ice to orbit

An approaching storm is moving at 15 km an hour what do you need to know to determine its velocity

How did astronomers precisely determine the length of an Astronomical Unit in the 1960s?

If a 1.50 kg mass revolves at the end of a string 0.50 m long, and its tangential speed is 6.0 m/s, calculate the centripetal force.

Balanced forces can change an object's direction. A. True B. False