What is the net force on an object that has a force pushing downward at 25N and a forcing pushing upward at 10N?

What TWO things happen to solar radiation that reaches earth?

The tension t at each end of the chain has magnitude 25 n. what is the mass of the chain? (use g = 9.8 m/s2 for the acceleration due to gravity. give your answer correct to at least two decimal places.)

How long did Skylab orbit the earth?

When did the solar system develop

A motorist makes a trip of 180 miles. For the first 90 mph she drives at a constant speed of 30 mph. What constant speed must she drives the remaining distance if her average speed for the total trip is to be 40 mph

The diagram shows the directions of the earth's rotation and the moon's orbit around the earth. Which of these phenomena occurs on earth because of this?

Which layer of the atmosphere is made up of charged atoms?

In a given circuit, the supplied voltage is 1.5 volts, and the resistor value is 3 ohms. Use Ohm's law to determine the current in the circuit. 2.0 amps 0.5 amps 4.5 amps 1.5 amps

Six different kinds of weathering examples.

In what ways did the work of Copernicus and Galileo differ from the views of the ancient Greeks and of their contemporaries?