When powdered iron is left exposed to the air, it rusts. explain why the mass of the rust is greater than the mass of the powdered iron?

How high is the rocket when the canister hits the launch pad, assuming that the rocket does not change its acceleration?

A car traveling at 27 m/s starts to decelerate steadily. It comes to a complete stop in 5 seconds. What is its acceleration?

A company is creating a new cylindrical container to replace its original cylindrical container. ' The new container will have 4 times the volume of the original container.

How much helium gas would it take to fill a gas balloon with a volume of 11:0 cm3 when the temperature is 41.0◦c and the atmospheric pressure is 790 mm hg? answer in units of mol?

What is the number of neutrons in an element with a mass number of 117 and a proton number of 67? -67 -117 -50 -0

Ron bicycles forward with an acceleration of 2.1 m/s2. If he is applying a forward force of 195 N, what is his mass?

Diane swim 5 kilometers against the current in the same amout of time it took her to swim 15 kilometers with the current. The rate of the current was 2 kilometers per hour. How fast would diane swim if there were no current?

A man paddles a canoe in a long, straight section of a river. The canoe moves downstream with constant speed 5 m/s relative to the water. The river has a steady current of 1 m/s relative to the bank. The man's hat falls into the river.

In an atom, almost all of the mass is concentrated in a tiny nucleus because

A truck travels down the highway at a speed of 110 km/hr. How long does the trip last if the truck covered 2200km?