What are the four most common gases in dry air?

The energy associated with the random motion of molecules or atoms within a substance is A. electromagnetic energy. B. gravitational potential energy. C. thermal energy.

Use the concept of fields to describe how forces can act from a distance.

Es Which situation is the best analogy for the Doppler effect? A) A large truck is harder to move than a smaller car. A tennis ball strikes a wall and comes back to you. A toy car moves from a carpet to a tile floor and turns.

One 10.0 amp resistor is wired in a series with two 10.0 amp resistors in parallel. A 45.0 C battery supplies power to the circuit. What is the total current through the circuit?

What does the speed of sound depend on? A. Medium that the sound travels through B. Acoustics C. Frequency of the sound D. Loudness of the sound

A swimming pool has the dimensions of 10 meters, 5 meters, and 1 meter. What is the pool's volume? 50 m 50 m3 50 m2 25 m3

A child pushes horizontally on a box of mass m which moves with constant speed v across a horizontal floor. The coefficient of friction between the box and the floor is μ. At what rate does the child do work on the box?

What two qauntities must be known to calculate the density of a sample of matter

An element's atomic number is 38. How many protons would an atom of this element have?

What's are some forms of chemical energy