A worker uses a cart to move a load of bricks a distance of 10m across a parking lot. if he pushes the cart with a constant force of 209 N, what amount of work does he do?

Suppose you are walking in an airliner in flight

When dissolved in water, a strong acid A. ionizes completely. B. releases hydrogen gas. C. produces an alkaline solution. D. produces a solution that does not conduct electric current.

A metal radiator's temperature falls from 90 degrees Celsius to 40 degrees Celsius. What has happened to the thermal energy contained by the radiator? A. It has increased. B. It has remained constant. C. It has decreased. D. It has been destroyed.

3. Read this sentence from the text: "Most of the solar radiation is absorbed by the atmosphere and much of what reaches the earth's surface is radiated back into the atmosphere to become heat energy." What can you conclude about heat energy? A.

A 256-hertz vibrating tuning fork is brought near a nonvibrating 256-hertz tuning fork. The second tuning fork begins to vibrate.

What is the low end of the range of surface temperature of white stars

The larger the push, the larger the change in velocity. This is an example of Newton's Second Law of Motion which states that the acceleration an object experiences is

Dr. Halite combined sodium metal with chlorine gas to make sodium chloride (table salt). the chemical reaction used up all of the metal and all of the gas. If Dr.

Which planet, when viewed through a telescope, appears as a reddish ball interrupted by some permanent dark regions that change intensity?

A wave has a wavelength of 10 mm and a frequency of 5 hertz. What is its speed? a. 50 mm/s b. 50 hertz's c. 2 mms d. 0 0.50 mms