A student visits the beach during a very hot day. She steps on the sand and jumps because it is so hot. What type of heat transfer is demonstrated by the sand in this example?

A. conduction

B. radiation

C. convection

D. transmission

The passing of heat through a material while the material itself stays in place. A. radiation B. conduction C. convection

Since an object moving in uniform circular motion keeps a constant speed, there is no force necessary to keep it in motion. True False

How is 'one standard kilogram' defined in SI system?

A spring on the produce scale at the farmers market has a spring constant of 5.2 N/m. A giant bag of apples is hung from the spring and the spring stretches 0.32m. What is the elastic potential energy stored in the spring?

A hair dryer draws a current of 10 A plugged into a 120 V outlet. What is the resistance of the hair dryer?

You slide a box of books at constant speed up a 30° ramp, applying a force of 200 n directed up the slope. the coefficient of sliding friction is 0.18.

Two trains leave the same station at the same time. The first train travels north at 60 mph. The second train travels west at 45 mph. Find how fast the distance between the trains is changing two hours after the trains have left.

If the room radius is 4.5 m, and the rotation frequency is 0.8 revolutions per second when the floor drops out, what is the minimum coefficient of static friction so that the people will not slip down?

Energy of motion is known as what energy

While a constant total force of 17 n is exerted on a cart, the cart's acceleration is 5 m/s2. find the mass of the cart?