If energy can not be created or destroyed then how do we act on it or keep it alive (im not asking how to posses it) ?

While running these tests, crall notices a similarity in the velocity measured at the ground independent of whether the tennis ball is thrown upward or downward.

What ions exist in base solutions

What is the MAIN reason water from the oceans turns to water vapor, and then evaporates into the air?

What term is used to describe a system that loses energy to objects that are not part of the system?

What is the net force on a 2-kg skateboard accelerating at a rate of 2 m/s/s?

What is the mass of 5 moles of gold

A crane lifts a 400 N crate full of baked beans 15 m. How much work was done by the crane?

High altitude high velocity rivers of air are called

A string of 18 identical Christmas tree lights are connected in series to a 130 V source. The string dissipates 61 W. What is the equivalent resistance of the light string? Answer in units of Ω.

For each of the following (a through d), indicate which is a variable and which is a constant:a. The number of minutes in an hour. b. Systolic blood pressure. c. Freezing temperature of water in degrees Kelvin. d. Ratings of daily anxiety.