Most metallic ores are produced by which two of processes?

a) Metamorphic and Sedimentary

b) Igneous and Metamorphic

c) Igneous and Sedimentary

d) Cementation and Compaction

Why do some things float but others sink if they have the same mass?

Why does a shaded-pole motor run at constant speed?

6) Repeat experiment 5) a) but now use the stored energy meter. Why do you think the change takes place. charge remains constant across the plates but voltage will increase as separation increases. As voltage increases, stored energy increases.

Calculate the electrical energy expended in a device across which the circuit voltage drops by 40.0 volts in moving a charge of 2 coulombs. A) 20 B) 80

What is an example of an ionic bond

Think Critically: A lightbulb converts 10 percent of the electrical energy it uses into radiant energy. Make a hypothesis about the other form of energy produced.

4) A satellite is in orbit around the earth. Which one feels the greater force? A) It depends on the distance of the satellite from Earth.

Meteoroids usually come from?

An astronomer sees two stars in the sky. Both stars are equally far from Earth, but the first star is brighter than the second star. Which of the following is a valid conclusion about the first star? It is larger than the second star.

Crane lifts a 1,052 kg car. What force in Newtons must the crane apply to the car to lift it?