What two simple machines make a skateboard?

The main enzyme involved in linking individual nucleotides into dna molecules is

17. As the mass of an object increases, the force needed to accelerate the object a. stays the same b. decreases c. stops d. increases

A rocket is shot straight up from the earth, with a net acceleration (acceleration by the rocket engine minus gravitational pullback) of during the initial stage of flight until the engine cut out at sec.

At the beginning of a bobsled race, teammates push their bobsled along the track before jumping into it. a. Before the teammates jump in, they push the bobsled (m = 150 kg) from rest to a speed of 4.2 m/s.

When a light wave bends around a barrier or the edge of an opening, the resulting waves can A. interfere with each other. B. have a greater speed. C. reflect onto each other. D. refract through each other.

Describe the rise and fall of a basketball using the concepts of kinetic energy and potential energy

Another word for character in sports is "sportsmanship." - True False

Assume an 8-kg bowling ball moving at 2m/s bounces off a spring at the same speed that it had before bouncing. What is the momentum of the recoil?

A physics book slides off a horizontal tabletop with a speed of 3.90 m/s. It strikes the floor in 0.350 s. Ignore air resistance. Find the height of the tabletop above the floor.

A guitar string 66 cm long vibrates with a standing wave that has two antinodes. 1. Which harmonic is this 2. what is the wavelength