What charge does an atom have when electrons are lost from the atom?

Explain Kepler's laws

A force of 450 N accelerates a box across a frictionless surface at a rate of 15 m/s2. Find the mass of the box? A) 30 N B) 30 kg C) 6,750 N D) 6,750 kg

A water pump pumps 3 kg of water every second from the bottom of a well to the top of the well 50 m above if the pump used 2000 W of electrical power to accomplish the task what is the efficiency of the pump

What device uses radiation or particles to split a beam so that the number of different types of radiation or particles can be measured? magnetometer odometer spectrometer galvanometer

It is not possible for just 3 forces to be acting upon an object and the forces are balanced true or false

At what temperature did the substance in the test tube into a solid?

What occurs when the velocity of Earth is doubled? a. The orbit of Earth around the Sun becomes smaller b. The orbit of Earth does not change c. The Earth escapes the Sun d. The orbit becomes more elliptical

When is a body said to be at rest

27. Calculate the impulse when an average force of 10 N acts on a cart for 5.0 s.

A boy on a bicycle is resting at the top of a hill then he rides his bicycle down the hill describe how the boy potential and kineti energy differ at the top middle and bottom of the him