As viewed from Earth, the light from a star has

lower frequencies than the light emitted by the

star because the star is

(1) moving toward Earth

(2) moving away from Earth

(3) stationary

Which of the following substances is a mixture? a. Baking soda b. Gasoline c. Salt d. Sugar

A chandelier has sockets for 12 light bulbs. Suppose there are 75 of these chandeliers in an auditorium. If a box of light bulbs contains four bulbs, what is the minimum number of boxes needed to fill all of the sockets in all of the chandeliers?

Incandescent light bulbs emit thermal radiation because their filaments are heated to about 2500 Kelvin. LED light bulbs emit only at particular visible wavelengths.

A fixed amount of ideal gas is kept in a container of fixed volume. The absolute pressure P, in pascals, of the gas is plotted as a function of its temperature T, in degrees Celsius.

Use the work-energy theorem to solve each of these problems. You can use Newton's laws to check your answers. A skier moving at 5.95 m/s encounters a long, rough, horizontal patch of snow having a coefficient of kinetic friction of 0.

Lemonade powder is stirred into water until it dissolves. Which are true statements? Check all that apply. A. Lemonade is the solute. B. Water is the solvent. C. Lemonade is the solvent. D. Water is the solute.

A skateboarder is accelerating forward. How would his acceleration change if he had more mass? A. His acceleration would decrease. B. His acceleration would be zero. C. acceleration would stay the same. D. acceleration would increase.

What is phanerogam? mention it's two group

A runner has a momentum of 720 kg m/s and is traveling at a velocity of 5 m/s. What is his mass?

What is electrical conductivity?