According to the definition of power, a powerful person is able to do which of the following?

A. lift heavy objects

B. do less work in more time

C. do more work in less time

D. exert a larger force for a longer time

In water jet cutting and abrasive water jet cutting, the separation between the nozzle opening and the work surface is called which one of the following: (a) gap, (b) gap size, (c) orifice, (d) overcut, or (e) standoff distance?

What is the index of refraction of a refractive medium if the angle of incidence in air is 30 and the angle of refraction. Is 15

What is the next step if the data from an investigation do not support the original hypothesis? A. The data are revised to support the hypothesis. B. The data are incorrect and the experiment is run again. C.

Give a specific example of a machine and describe how its mechanical efficiency might be calculated

Which of the following produces a magnetic field?

In our physical world, by far, the most abundance free charge in the universe is the electron, which has a negative charge. What do we mean, then, when we say that the surface of an object is positively charged?

You're going camping and are thinking of carrying 3 gallons of water. How much does the water weigh, in units of pounds?

A student is performing a double-slit experiment to determine the wavelength of a light source. She has measured the distance between dark bands and the distance between the slits and the screen.

If a substance cannot be broken down chemically into smaller substances it is A) An element B) a compound C) an atom D) a molecule

Describe the general characteristics of the nearest stars. (Size, luminosity, color, etc., do not include specific stars)