Car 1 drives 20mph to the south and car 2 drives 30mph to the north. From the frame of reference to car 1 what is the velocity of car 2?

The reciprocal of frequency is

The manufacturer of a 6 V dry-cell flashlight battery says that the battery will deliver 15 mA for 64 continuous hours. During that time the voltage will drop from 6 V to 4 V. Assume the drop in voltage is linear with time.

A photon with a frequency of 5.48 * 1014 hertz is emitted when an electron in a mercury atom falls to a lower energy level. Identify the color of light associated with this photon.

Why does the temperature decreases at higher altitudes

Describe the end product of a single episode of meiosis

Which type of reaction will for a chemical bonded combination

What kind of change is salt dissolving in water

Which of these is the most effective way for manny to cool down after kickboxing? start static stretches to increase his flexibility walk around to lower his heart rate sit and catch his breath to avoid light-headedness run one to three miles to

One of the driving forces of plate motion is: A. volcanic eruptions along coastlines B. meteor impacts in the ocean basins C. convection currents in the mantle D. hot liquid magma in the inner core

Which element is required for the combustion of fossil fuels? nitrogen hydrogen oxygen carbon