A child sits motionless on a swing. Which of the following forces does not act on the swing?

A satellite in space experiences direct sunlight and heats up. During periods when it receives not direct sunlight, what happens

How many quantum numbers are used to describe the energy state of an electron in an atom

Why does the reading on hydrometer increase towards the bottom?

Which of the following properties of an object determines its terminal velocity when the object falls toward the Earth? a. shape b. weight c. mass d. density

In which direction does light oscillate if it is reflected off a shiny transparent surface

How long does it take for light to travel from the sun to earth?

Two very small spheres are initially neutral and separated by a distance of 0.30 m. Suppose that 2.50 1013 electrons are removed from one sphere and placed on the other. (a) What is the magnitude of the electrostatic force that acts on each sphere?

Why is it important to balance a chemical equation? A. It is not important to balance a chemical equal B. To make sure you have the correct products C. To make sure you have the correct reactants D. To obey the law of conservation of mass

The presence of icicles hanging off the eaves of a wood-framed structure is most likely due to: heavy snow followed by a thaw. improper insulation in wall cavities. use of a poor-quality roof sheathing material. lack of proper roof ventilation.

Both gravitational potential energy and kinetic energy depend on