A student pushes a 12.0 kg box with a horizontal force of 20 N. The friction force on the box is 9.0 N. Which of the following is the best approximation of the box's acceleration?

Rockets are able to accelerate in space because: a. they have excess fuel to burn from their initial take-off c. the force of gravity propels them b. they push exhaust in the same direction as they wish to accelerate d.

Within a book on a desk, there are billions of forces pushing and pulling on all the molecules. why is it these forces never by chance add up to a net force in one direction, causing the book to accelerate "spontaneously" across the desk?

The density of glycerin is 1.26 g/cm3. Which substance will sink in glycerin?

A generator uses electricity to generate energy

What is the most important reason for food processing and preservation?

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

What is the displacement and distance if I walk 8 blocks north, 9 blocks west and 10 blocks south

What investigations provide large amounts of information about a wide range of variables.

Why would Sodium (Na) and Chlorine (CI) want to form a lonic Bond? -to achieve a full inner valence shell -to achieve a equal amount of protons & electrons in their nucleus -to achieve an stable amount of protons & neutrons in their nucleus -to

A digital thermometer reads 15 degrees Celsius, what is the uncertainty?