How much greater is the light-collecting area of a 4-m telescope than that of a 1-m telescope?

the sample of an ideal gas is in a tank of constant volume the sample absorbs heat energy so that its temperature changes from 300 to 600 K if v is the average speed of the gas molecules before the absorption of heat and v is their average speed

A ball is thrown upward from the ground with an initial speed of 22.0 m/s; at the same instant, another ball is dropped from a building 16 m high. after how long will the balls be at the same height

It takes a soccer player 3 seconds so reduce his speed to 3.1 m/s. What is the magnitude of his acceleration?

What is the number of complete oscillations of a wave per second

What effect does solar wind have on mercury Venus and mars

An experiment is performed to obtain the value of a physical property. If the true (i. e., correct) value of the property is 50 and the measured (i. e., experimental) value is 32, the percent error of the experimental result is:

White moths were found in huge numbers in the city of Birmingham. These moths could be easily camouflaged by the trees. Because of sudden industrial development, the trees in the city were covered with soot.

What two factors determine how fast weathering occurs

A sound that's produced by a single wave at a constant frequency and with no overtones is called

Which of the following is ignored when determining the relative mass of atoms? protons nucleus electrons. neutrons