What uses voltage?

a

chairs

b

appliances or lights

c

flowers

d

wires

Some students paint the inside of several boxes. They paint each box a different color. They observe that the inside of the box painted white looks brighter than the others. What is the most likely reason this box looks brighter?

One way to measure g on another planet or moon by remote sensing is to measure how long it takes an object to fall a given distance. A lander vehicle on a distant planet records the fact that it takes 3.58 s for a ball to fall freely 12.

Suppose the sun shrank in size but its mass remained the same. what would happen to the orbit of earth?

You are In-line skates at the top of a small hill. Your potential energy is equal to 1000 J. The last time we checked, your mass was 60 KG. What is the height of the hill?

Students of different ages were given the same puzzle to assemble. The puzzle assembly time was measured. The puzzle is meant for ages 5-8. What's the hypothesis?

The metric system and metric conversions are?

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