How does water flowing over a waterfall involve both kinetic energy and potential energy?

When measuring weight on a scale that is accurate to the nearest 0.1 pound, what are the real limits for the weight of 145 pounds?

An * is a logical conclusion based on available information or evidence

Which of the following best describes a chemical equation that demonstrates the law of conservation of matter? A. It has five total atoms on each side. B. It has four molecules on each side. C. It has two compounds on each side. D.

How can a scientist ensure that his or her data are reliable?

How to calculate aphelion

In which one of the following situations is zero net work done? A) A ball rolls down an inclined plane. B) A physics student stretches a spring. C) A projectile falls toward the surface of Earth.

Object dropped from height of 25 meters, what velocity will it hit the ground?

How can the time period of a pendulum be decreased or increased

A space probe is sent to the vicinity of the star Capella, which is 42.2 light-years from the earth. (A light-year is the distance light travels in a year.) The probe travels with a speed of 0.9930c.

ngrid kicks a football with an initial velocity of 12 m/s at an angle of 45° relative to the ground. The horizontal component of the initial velocity to the nearest tenth is m/s.