Which of the following is an example of kinetic energy?

a sled sitting at the top of a hill

a girl running in a race

a tank containing gasoline

a car sitting motionless Save

consider a 38 degree F object placed in 68 F room write a differential equation for T thetemperature of the object at time t using k>0 for the constant of proportionality and write your equation in terms of T k and t

The density of gold is 19.3 g/cm3. A piece of gold displaces 2 mL of water. The specific gravity of gold is: A. 19.3 B. 38.6 C. 9.6 D. 0.10

Can the force of gravity change on our own planet? Explain.

Intramolecular and intermolecular forces hold together which of the following? A. atoms within a molecule B. molecules within an object C. charged particles within a salt crystal D. the atoms within compounds E. all of the above

How does the force of gravity affects an objects acceleration

Which of the following water samples would be considered acidic

A linearly-polarized electromagnetic (EM) wave has an electric field with amplitude 1000 V/m. You hold a a linear polarizer in front of it and rotate the polarizer so that all of the EM wave is blocked. You then rotate the polarizer 30 degree.

Let y'=4 x. find all values of r such that y = rx^{2} satisfies the differential equation. if there is more than one correct answer, enter your answers as a comma separated list.

What are the starting materials for nuclear fission

Why is it possible to throw a 0.145 kg baseball much further than a 7 kg bowling ball?