When galaxies move away from us they appear to have a "red shift" in color. Explain why this happens.

Jaipal measures a circuit at 1.2 A and 24. Using Ohm's law, what can he calculate for the circuit? current (C) current (I) voltage (V) voltage (A)

The rate constant of a chemical reaction increased from 0.100 s-1 to 3.10 s-1 upon raising the temperature from 25.0 ∘C to 51.0 ∘C. Part A Calculate the value of (1/T2-1/T1) where T1 is the initial temperature and T2 is the final temperature.

Pressure and volume changes at a constant temperature can be calculated using a. Boyle's law. c. Kelvin's law. b. Charles's law. d. Dalton's law.

Which situation could be considered pseudoscience? 1. students gather to identify plants in an area. 2. students gather to record their beliefs about paranormal activity. 3.

As a mercury atom absorbs a photon of energy, an electron in the atom changes from energy level d to energy level e. Determine the energy of the absorbed photon in electronvolts.

A certain wave motion has a frequency of 10 cycles / s and a wavelength of 3 m. so its propagation speed is

The planet earth orbits around the sun and also spins around its own axis. 33% part (a) calculate the angular momentum of the earth in its orbit around the sun in kg • m2/s

An electron experiences a magnetic force of magnitude 4.60 x 10^-15 N when moving at an angle of 60.0° with respect to a magnetic field of magnitude 3.50 x 10^-3 T. Find the speed of the electron.

If you jump vertically while inside a fast-moving train that is slowing down, you land: a. a bit behind your original position. b. at your original position. c. a bit ahead of your original position.

In the sky, you see a red star and a blue star. Which one is hotter? A. The red star B. They are probably the same temperature C. The blue star D. The answer will depend on how far away the stars are