A student says that since the atomic theory is just a theory, it should not be considered useful. Which statement best argues against the student's opinion?

The raw material that is added to a system for processing is known as

How many workouts per week of vigorous, continuous activity are needed to improve your cardiorespitory fitness? A. 2-3 B. 3-5 C. 4-5 D. 5-6

What is the speed of a car going v=1.000mph in SI units? Notice that you will need to change from miles to meters and from hours to seconds. You can do each conversion separately. Use the facts that 1mile=1609m and 1hour=3600s. Express your answer i

A shell of mass 10 kg is shot upward with an initial velocity of 200 m/sec. The magnitude of the force on the shell due to air resistance is v/20.

If the average distance between bumps on a road is about 10 m and the natural frequency of the suspension system in the car is about 0.90 hz, at what speed will you feel the bumps the most?

Bus A and Bus B leave school on a field trip when a stopwatch reads zero. Bus A travels at a constant 50 km/h, and Bus B travels at a constant 75 km/h. How far are the two buses from school when the stopwatch reads 1.5 h?. a ... Bus A is 76.

When observed from Earth, the wavelengths of light emitted by a star are shifted toward the red end of the electromagnetic spectrum. Why does this redshift occur?

Object A has a length of 3 cm, a width of 10 cm, and a height of 2 cm. Object B is dropped into a graduated cylinder. It displaces 60 mL of water. The volume of object A is:

Is the following sentence true or false? Some information about an object or process may be missing from a model.

If V is a velocity, l a length, and v a fluid property having dimensions of L2T-1, which of the following combinations are qualitatively dimensionless (show work for a through d) : (a) V l v (b) Vl/v (c) V2v (d) V / (l v)