5.25 calories are absorbed by an iron nail. How many joules is this?

Commercial airplanes are sometimes pushed out of the passenger loading area by a tractor. An 1800-kg tractor exerts a force of 1.75*10^4N backward on the pavement, and the system experiences forces resisting motion that total 2400 N.

A book sitting on a shelf has gravitational potential energy. true or false

Why are such scientific advances still valuable?

How can you calculate the number of electrons in an atom

How does the efficiency of the inclined plane vary with the inclination angle?

Consider the incomplete equation below Superscript 4 subscript 2 upper H e plus superscript 4 subscript 2 upper H e right arrow question mark.

When the temperature of a gas decreases at constant volume, its a. pressure increases. b. mass increases. c. pressure decreases. d. particles move faster.

A 12-V battery is connected to an air-filled capacitor that consists of two parallel plates, each plate has an area of 7.60 cm2 . The separation between the plates of the capacitor is d = 0.30 cm.

Why do you believe knowing how elements and compounds react together Is essential In every day matters?

A bullet with a mass 2.25g is fired up into the air with a velocity of 187.5 m/s. What is the maximum height of the bullet