What is the wavelength of a photon of energy 2.00 eV?
What will be an ideal response?
622. nm
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A mass of 0.40 kg, hanging from a spring with a spring constant of 75.0 N/m, is set into an up-and-down simple harmonic motion. What is the speed of the mass when moving through the equilibrium point? The starting displacement from equilibrium is 0.20 m
a. zero b. 2.7 m/s c. 3.9 m/s d. 3.4 m/s e. 0.55 m/s
Which element has the lowest mass per nuclear particle and therefore cannot release energy by either fusion or fission?
A) hydrogen B) iron C) oxygen D) silicon
Starting with a sample of pure parent radionuclide, what would be the ratio of the parent radionuclide to its daughter after two half-lives have elapsed?
a. 1 to 1 b. 1 to 2 c. 1 to 3 d. 1 to 4
The surface of Mercury resembles the Moon's surface in that they are both ________.
A. covered with volcanoes B. eroded by wind C. heavily cratered D. newly resurfaced