The theory that light exists in quantized "chunks" was proposed in response

to which of the following?

A. Electron interference patterns

O

B. Discovery of Planck's constant

O

C. The ultraviolet catastrophe

O

D. Emission spectra

A parachutist of mass 75kg descends with an acceleration of 8 m/s2. What is the upward force exerted by the air on the parachutist?

What is the first semiconductor

Why do objects become cold

If the color red has a wavelength of 7.0 107 m. its frequency is 4.3-1014 5.0.1014 5.2.1094 7.5-1014

Which of the following is NOT a possible cause of a genetic disorder in humans? changes in the number of chromosomes mutations in the DNA of genes being born underweight changes in the structure of chromosomes

Calculate the energy equivalent in joules of the mass of a proton. [Show all work, including the equation and substitution with units.]

What is the final velocity of a rocket that is traveling at 205 m/s and accelerates at 8.03 m/s2 while moving 1750 m?

Is it possible to get a bruise inside your body?

he Period refers to the time it takes an individual particle (or coil) to complete one back and forth vibration about its fixed position. Contrast a low period set of continuous vibrations with a high period set of continuous vibrations.

The velocity - time graph of a ball of mass 25g moving on road is as given below: (a) How much force does the road exert on the ball to bring it to rest? (b) What is the direction of the force exerted by the road?