Akeem is walking on the beach on a hot summer day. The sand is very hot, so he runs and puts his feet in the water, which is much cooler. Explain why the water is cooler than the sand.

A circuit maintains a constant resistance. If the current in the circuit is doubled, what is the effect on the power dissipated by the circuit?

You are moving into an apartment and take the elevator to the 6th floor. Suppose your weight is 660 N and that of your belongings is 1100 N. (a) Determine the work done by the elevator in lifting you and your belongings up to the 6th floor (15.

How many paths through which charge can flow would be shown in a diagram of a series circuit? 1. one 2. two or more 3. none 4. more information

It takes a bus driver 30 min to pick up students from four stops. The last stop is at the corner of green street and route 70. The most direct route to school is north on route 70. The speed limit on route 70 is 35 kph.

A string, stretched between two fixed posts, forms standing-wave resonances at 325 Hz and 390 Hz. What is the largest possible value of its fundamental frequency?

What two things change when an object is in motion

Calculate the energy equivalent in joules of the mass of a proton. [Show all work, including the equation and substitution with units.]

What is the final velocity of a rocket that is traveling at 205 m/s and accelerates at 8.03 m/s2 while moving 1750 m?

Is it possible to get a bruise inside your body?

he Period refers to the time it takes an individual particle (or coil) to complete one back and forth vibration about its fixed position. Contrast a low period set of continuous vibrations with a high period set of continuous vibrations.