When scientists identify the age of a fossil they

a. place it in a time period

b. cut it up.

c. decide if it's valuable.

d. decide what continent it belongs on.

What is in the crysphere A. earth's crust B. the sun's corona C. mountains D. earth's ice

How far does a car go in 10 seconds at the speed of 44m/s

What are the 8 steps of the scientific method, in order?

A small sphere of mass m is launched horizontally over a body of water from a height h above the water and with a launch speed v0. Determine expressions for the following in terms of m, v0, h, and g. Air resistance is negligibly small.

How can a parked car move? a. add force to balance all forces b. remove force to balance all forces c. add force to unbalance the forces d. remove all forces

The kinetic energy of an object is quadrupled. its momentum will change by what factor?

Combining which of the following substances with germanium will cause the germanium to emit free electrons? A. Bismuth B. Gallium C. Aluminum D. Indium

A 50.0-g Super Ball traveling at 25.0 m/s bounces off a brick wall and rebounds at 22.0 m/s. A high-speed camera records this event. If the ball is in contact with the wall for 3.

A heat engine with a thermal efficiency of 45 percent rejects 500 kj/kg of heat. how much heat does it receive

Which was least likely to have been a component of Earth's atmosphere before life began? A-sulfur B-carbon dioxide C-oxygen D-water vapor