What is the frequency of green light that has a wavelength of 489nm?

What is the impulse of a 2 kg object that starts at 10 m/s and comes to a stop over 0.4 seconds?

A 4.3-g object moving to the right at 22 cm/s makes an elastic head-on collision with a 8.6-g object that is initially at rest. what is the velocity of the 4.3-g mass after the collision?

An engineer is designing a runway for a witch. Several brooms will use the runway and the engineer must design it so that it is long enough for the largest brooms to become airborne before the runway ends. If the largest broom accelerates at 3.

What effect might the stitches on a baseball have on a path of a baseball

Explain why the driver of a car has to continuously apply pressure to the gas pedal in order to keep the car cruising at a steady speed, even on a flat road. Does this situation violate the law of conservation of energy? Explain.

Why is it important to have national security as a citizen of the united states?

What is the value of the charge that experiences a force of 2.4 * 10-3 N in an electric field of 6.8 * 10-5 N/C? A. 1.6 * 10-7 C B. 2.5 * 10-3 C C. 2.8 * 10-3 C D. 3.5 * 101 C

What are some characteristics that are determined by DNA

Which statements accurately describe convection in water? Check all that apply. Cold water sinks because it is less dense than warm water. Cold water sinks because it is more dense than warm water.

Which of the following sentences about the velocity of an object is NOT true? A. The object's velocity is a scalar quantity. B. When the direction of motion changes, the velocity changes. C.