What causes an object to rotate

The model below shows a calcium atom. How many electrons are in the third energy level? 2 8 18 20

A boy whirls a stone with uniform speed in a horizontal circle of radius 2 m and at height 2 m above the ground. The string breaks and the stone flies off horizontally and strikes the ground after traveling a horizontal distance of 2 m.

Mars has an orbital period of 1.88 years. in two or more complete sentences, explain how to calculate the average distance from mars to the sun, and then calculate it.

If your motorcycle runs out of fuel while you are driving, the engine stops but you do not come to an immediate stop. The concept that most explains why this occurs is A. Resistance B. Gravity C. Acceleration D. Inertia

What physical fitness component is the cornerstone that creates a pathway to improving your other fitness levels?

What is the most advanced life form on earth

Which EM wave is about the size of humans?

Describe how the Catapult works?

Newton's third law of motion states that the force pair acting on different objects consist of two forces that

While working on her science fair project Venus connected a battery to a circuit that contained a light bulb. Venus decided to change the light bulb to a higher resistance, but she wanted to keep the current the same.