What type of waves do you think sunscreen our skin from cancer from?

You hop on the carousel horse. The attendant flips the switch and you move up and down, around and around. When the ride ends, the attendant again flips the switch.

The heat energy required to chang state is

With what force will a car hit a tree if the car has a mass of 3,000 kg and it is accelerating at a rate of 2m/s2

A hollow, conducting sphere with an outer radius of 0.250 m and an inner radius of 0.200 m has a uniform surface charge density of + 6.37*10-6C/m2. A charge of - 0.500μC is now introduced at the center of the cavity inside the sphere.

A 100kg cannon at rest contains a 10kgcannonball. when fired, the cannonball leaves the cannon with avelocity of 90m/s. what is the magnitude of the recoil speed of thecannon.

If a car is moving along the highway at a constant speed of 50 m/s, is there an unbalanced force acting on the car? How do you know? Explain using one of Newton's Laws.

If a sprinter has an average acceleration of 9.5 m/s2, how long does it take for the person to go from rest to 10 m/s

If the average velocity of a duck is zero in a given time interval, what can you say about the displacement of the duck for that interval?

How much power can I generate while lifting a mass for 30 seconds?

A car is idling at a stoplight. When the light turns green, the car takes 12 seconds to accelerate to 18.7 m/s. What is the average acceleration of the car? 0.64 m/s2 1.6 m/s2 -0.64 m/s2 -1.6 m/s2