Why does increasing the number trials increase confidence in the results of the experiment?

A ball of mass 0.10 kg moving at a speed of 3.0 m/s collides with a wall and bounces directly back with the same speed. If the ball was in contact with the wall for 0.

Lin Yao looks at the back of a spoon. How should she describe her reflection?

Applying ideas read about the advantages of nuclear energy. Explain why countries such as France and Japan rely heavily on nuclear power

A high pressure gas inflates a balloon, doing 103 joules of work. It happens quickly enough that any heat exchange is negligible.

The potential difference across a resistor in a particular electric circuit is 420 V. The current through the resistor is 19.0 A. What is its resistance (in Ω) ?

What uses electricity

How do invasive species spread? identify three methods. Why do invasive species pose such a threat?

If earth somehow expanded to a larger radius, with no change in mass, how would you're weight be affected? How would it be affected if earth shrunk?

Consider a helium balloon on a string tied to the seat of your stationary car. The windows are closed, so there is no air motion within the car. The car begins to accelerate forward. Which way will the balloon lean, forward or backward

The force of gravity acts upon meteors from the rocky asteroid belt between mars and Jupiter. Where is the force of gravity most likely to pull these meteors