What is the velocity of an object in free fall after 3. s.

2. Which of the following is an example of a passive immunization? A. Antibodies against rabies given to someone who was bitten by a potentially rabid dog B. Heat-killed flu antigen grown in chicken eggs C.

The mass number of an atom of carbon (C) represents the total number of A) protons in the atom. B) neutrons and electrons in the atom. C) protons and neutrons in the atom. D) electrons in the atom.

Which is the best example of the wave phenomenon called transmission?

Which has greater accuracy, the 10 mL graduated cylinder or the 50 mL graduated cylinder

A magnetic field forms around a moving electric charge, resulting in a magnetic field. Which does this describe? A. how electric charges can be used to make current flow B. how electric charges can be used to create a magnetic field C.

A 1000-kg space probe is motionless in space. to start moving, its main engine is fired for 5 s during which time it ejects exhaust gases at 5000 m/s. at the end of this process it is moving at 20 m/s. the approximate mass of the ejected gas is:

In the fishbowl, the glass, water, rocks, and plastic plants are in thermal equilibrium. This situation means the temperature of the rocks is? F. If the water is 75 degrees

An archer shoots an arrow at a 75.0 m distant target; the bullâs-eye of the target is at same height as the release height of the arrow. (a) at what angle must the arrow be released to hit the bullâs-eye if its initial speed is 35.

Which of the following is considered a contact forces?1) the force between two magnets. 2) the gravitational pull of a planet. 3) friction between an object and air. 4) the force between two charged particles.

All matter can be described by using what properties