A machine that changes only the direction of a force has a mechanical advantage of

The ability to regulate the amount of charge flowing in a circuit is A. resistance. B. direct current. C. voltage. D. alternating current.

When it comes to collecting physical evidence, crime scenes are fortunately available for long periods of time. True False

8. A sprinter on a school track team is running north at a velocity of 6.0 m/s. After 5.0 s, she is running south at 4.0 m/s. Calculate the average acceleration for this interval.

Describe the composition of the nucleus of an atom. Question 2 options: It is composed of protons. It is composed of protons and neutrons. It is composed of protons and electrons. It is composed of protons, neutrons, and electrons.

A car with a mass of 1,324 kilograms, traveling at a speed of 20 meters/second, crashes into a wall and stops. What is the kinetic energy after this perfectly inelastic collision? A. 0.0 joules B. 3.2 * 103 joules C. 1.0 * 104 joules D. 1.

Define the term volt.

A baseball player was hit by a baseball in the left eye and complains of double vision. What should you do? A. Restrict spinal movement B. Assess pupillary response C. Perform a detailed exam D. Apply ice to orbit

An approaching storm is moving at 15 km an hour what do you need to know to determine its velocity

How did astronomers precisely determine the length of an Astronomical Unit in the 1960s?

If a 1.50 kg mass revolves at the end of a string 0.50 m long, and its tangential speed is 6.0 m/s, calculate the centripetal force.