A measure of the quantity of matter is

a. density.

c. force.

b. weight.

d. mass.

The distance between two slits in a double-slit interference experiment is 2.9 x 10-6 m. The first-order bright fringe is measured on a screen at an angle of 12 degrees from the central maximum. What is the wavelength of the light

A race car has a centripetal acceleration of 18.75 m/s2 as it goes around a curve. If the curve is a circle with radius 12 m, what is the speed of the car? A. 15 m/s B. 9.8 m/s C. 1.6 m/s D. 17.2 m/s

In which situation would you see a partial lunar eclipse?

A. If an electron in a hydrogen atom has an energy of - 6.06 * 10^-20 J, which Bohr orbit is it in? b. If an electron in a hydrogen atom has an energy of - 2.69 * 10^-20 J, which Bohr orbit is it in?

70-kg trampoline artist jumps upward from the top of a platform with a vertical speed of 5.7 m/s.

When do magnets attract other magnets?

Why do some kinds of ice on Earth change the sea level when they melt while others do not?

Why are carbon and copper classified as elements

Which of the following is an extensive property? Select one: a. Density b. Temperature c. Mass d. Specific Heat e. Pressure

How do the earth's physical features affect people's activities? a. choice of occupation b. method of transportation c. recreational activities d. all of the above e. none of the above