Scientists develop knowledge by making about the natural world that may lead to a scientific question

How far away is Earth from the Sun? a. 93 miles b. 93 thousand miles c. 93 million miles d. 93 billion miles

A car of mass 1330 kg is traveling at 28.0 m/s. the driver applies the brakes to bring the car to rest in 5.6 s. calculate the force of the brakes on the car.

which of the following does not represent a significant negative environmental impact of using nuclear fuel

A 1.5 m wire carries a 9A current when a potential difference of 84 v is applied. what is the resistance of the wire

A sled is on an icy (frictionless) slope that is 30° above the horizontal. When a 40-N force, parallel to the incline and directed up the incline, is applied to the sled, the acceleration of the sled is 2.0 m/s 2, down the incline ...

What happens to water vapor as it rises in the atmosphere? A. Heats and condenses B. Heats and expands C. Cools and condenses D. Cools and expands

Which would likely demagnetize a magnetized iron nail?

To create "dry ice," manufacturers compress and cool carbon dioxide gas until it solidifies. Describe what happens to the carbon dioxide molecules as the gas is compressed and cooled.

A pulse of red light and a pulse of blue light enter a glass block normal to its surface at the same time. after passing through the block, which pulse exits first?

An object is hanging by a string from the ceiling of an elevator. the elevator is moving upward with a constant speed. what is the magnitude of the tension in the string? an object is hanging by a string from the ceiling of an elevator.