What does the force diagram look like for a book at rest on a desk?

The law of universal gravitation applies everywhere for everything applies everywhere but not for everything does not apply everywhere has not been proven

How many neutrons does element X have if it's atomic number is 21 and it's mass number is 75

Explain whether an editorial article in a newspaper, expressing the views of the editor, should be classified as a valid source of information.

Why is the high specific heat of water important to our planet?

What type of general wave requires a medium for the wave to travel through

A car is moving with a speed of 22 m/s. The driver then brakes, and the car comes to a halt after 6.5 s. What is the distance covered by the car after the driver brakes, until it comes to a stop? A) 36 m B) 72 m C) 140 m D) 210 m

Which of the following best explains why an explosive charge in a cannon can cause a cannonball to fly out of the cannon with a high velocity? A. because chemical potential energy can convert to gravitational potential energy B.

Distance divided by time what is velocity

The decay constant of a radioactive nuclide is 4.6 x 10^-3 s^-1. What is the half-life of the nuclide? 2.5 min 2.0 min 1.4 min 3.6 min 3.1 min

A furlong is an old british unit of length equal to 0.125 mi, derived from the length of a furrow in an acre of ploughed land. a fortnight is a unit of time corresponding to two weeks, or 14 days and nights.