A parallel beam of light of wavelength 450nm is incident normally on a diffraction grating which has 300lines/mm What is the total number of intensity maxima observed?

You have trained all year for a marathon. In your first attempt to run a marathon, you decide that you want to complete this 26-mile race in 4.5 hours. What would your average speed have to be to complete the race in 4.

Classify statements about the eye as true or false. the cornea is a transparent covering over the eye

Any device that makes work easier is called a.

A boat moves at a rate of 10mph in still water. if the river's current flows at a rate of 3mph, how long does it take the boat to travel 32 miles upstream?

What new technologies are used in determining the speed of light?

A sailboat moves north for a distance of 10.00 km when blown by a wind from the exact southeast with a force of 2.00 * 104 N. The sailboat travels the distance in 1.0 h.

Since protons (p*) with a positive charge and neutrons (nº) without a charge are located in the nucleus, what is the overall charge of the nucleus portion of an atom: positive, negative, or no charge at all? Explain.

At what temperature (in K) will 1.0 mol of gas occupy 1.0 m3 at a pressure of 1.0 * 10^4 pa

One horsepower (hp) is the amount of power required to lift a 75-kg mass a vertical distance of 1 m in 1 s. What is 2 hp equivalent to in watts (W) ?

What is the denfination of science