Define valence electrons and identify the number of valence electrons in an element using periodic table.

Imagine you are shaking the end of a rope to create a series of waves what will you observe if you begin shaking the rope more quickly use the terms wave speed, frequency, and wavelength in your answer

A car of mass 550 kg is moving at a speed of 1.5 m/s. A man pushes the car, increasing the speed to 3.2 m/s. How much work did the man do? A. 2816 J B. 3435 J C. 2197 J D. 4123 J

An air gun fires a pellet with a mass of 0.0010 slugs. The slug is fired from the gun, and after which possesses of 720 lb ft of kinetic energy. Find its velocity, in ft/s.

Projectile motion is an example of what kind of motion

Ashanti is 18 months old. When her mom leaves her at the babysitter's house, Ashanti cries initially. After a few moments, she stops crying because her mom is "out of sight and out of mind.

Which simple machine is a doorknob? a lever a screw a pulley a wheel and axle

A small ball of mass m is aligned above a larger ball of mass M = 0.63kg (with a slight separation) and the two are dropped simultaneously from a height of 1.8m.

If you apply a force of 1.0 n to a cart of mass 1.0 kg with negligible friction, what do you expect the acceleration to be?

How does a stars life begin?

Bart stole a watermelon and ran 5,000 feet from the cops and they chase lasted 0.1 hours how fast was Bart running in miles per hour