In any ecosystem, the size of a population

A. may change over time.

B. only depends on the population's reproductive rate.

C. always stays the same.

D. only depends on the amount of resources available.

If the astronaut throws the tool with a force of 16.0 n, what is the magnitude of the acceleration a of the astronaut during the throw? assume that the total mass of the astronaut after she throws the tool is 80.0 kg.

Which of the following best expresses the definition of mass?

A racecar burns gasoline to power its engine. As the car is racing around a track, what energy is involved in the system? Check all that apply. - mechanical energy - chemical energy - thermal energy - electromagnetic energy

When you swim underwater, the pressure of the water pushes against your chest cavity and subsequently reduces the size of your lungs. For every 10 m below the water surface, the pressure exerted by the water adds 14.

Javelin at 72 meters/second. he throws it at an angle of 22 degrees. how fast is he throwing it in the x-direction in meters/second?

Why is fluorine special in terms of electronegativity?

The airbag inflates and deflates quickly so

Two conducting spheres are each given a charge Q. The radius of the larger sphere is three times greater than that of the smaller sphere.

A solenoid with a ferromagnetic core is

When Cannon and Washburn measured stomach contractions with a balloon, they found that?