A student uses 216 watts of power to push a box for a distance of 15.6 meters in a time of 4.31 seconds. How much work did she do? How much force did she use to push the box?

The flame produced by the burner of a gas (propane) grill is a pale blue color when enough air mixes with the propane (c3h8) to burn it completely. for every gram of propane that flows through the burner, what volume of air is needed to burn it completely? assume that the temperature of the burner is 195.0°c, the pressure is 1.05 atm, and the mole fraction of o2 in air is 0.210.

The earth orbits a start called the

What is the wavelength of an earthquake wave if it has a speed of 8 km/s and a frequency of 3 hz?