A basic substance consisting of only one kind of atom is called a (n)

ion

compound

element

molecule

How long does it take a car to accelerate from 20 m/s to 40 m/s if it accelerates at 5 m/s2?

The pump of a water distribution system is powered by a 20-kW electric motor whose efficiency is 90%. The water flow rate through the pump is 40 L/s.

Which example illustrates a chemical change?

How many joules of work are done on a box when a force of 25 N pushes it 3 m?

1. What is the Kinetic Energy of a 260 kg object that is moving with a speed of 26 m/s?

This particle is found in the nucleus and adds mass to the nucleus, but changing its number does not change what the element is. This particle is the A. proton. B. photon. C. neutron. D. electron.

Projectile motion is an example of what kind of motion

What can change scientific knowledge?

6. What is ductility?

During practice, a baseball player hits a very high fly ball, and then runs in a straight line and catches it. Which had the greatest displacement during the time period from the hitting of the ball to its catching