A wave has a wavelength of 50 m and a speed of 200 m/s. What is the frequency of this wave in hertz?

What is final velocity of a 400kg car traveling at 36m/s that undergoes a braking force of 600N for 8 seconds

A solid concrete block weighs 150. N and is resting on the ground. Its dimensions are 0.400 m ✕ 0.200 m ✕ 0.100 m. A number of identical blocks are then stacked on top of this one.

A 60 kg woman stands in an elevator that is accelerating downward at 3.1 m/s2. Calculate the amount of force she exerts on the elevator floor.

Would two north poles attract each other or push away frim each other

A hot-air balloon is accelerating upward under the influence of two forces, its weight and the buoyant force. for simplicity, consider the weight to be only that of the hot air within the balloon, thus ignoring the balloon fabric and the basket.

What is the correct formula for Na + and (SO4) 2 - ? A. Na2SO4 B. Na2 (SO4) 2 C. NaSO4 D. NaSO6

which of the following objects is considered negatively charged A - one with excess electrons on the surface B - one with excess neutrons on the inside C - one with excess protons on the inside D - one with excess protons on the surface

In general, how do the densities of a material in solid and liquid form compare?

Alana summarized what happens when a ball sitting on top of a grassy hill rolls down the hill. The motionless ball has potential energy. Once the ball starts to roll down the hill, new kinetic energy is made.

What unit is commonly used when measuring the energy rating of an electrical appliance