A body is oscillating up and down at the end of a spring. Let's consider when the body is at the top of its up-and-down motion.The acceleration
a. is zero. b. has its largest magnitude.
c. points up. d. points down.
b, d
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A heavy neutral atom, such as iron, produces many spectral lines compared to light elements like hydrogen and helium. Why?
A) Because of the larger number of electrons and corresponding energy levels, more transitions are possible. B) Because of the larger number of electrons, there are many ionization levels possible. C) Because of the larger number protons, the amount of force holding the electrons to the atom can vary between different iron atoms. D) Because of the atom's larger size, it will be hit by more photons in a beam of light.
You see colors in a rainbow because of
a. interference b. diffraction c. specular reflection d. dispersion e. polarization
A proton and a deuteron are moving with equal velocities perpendicular to a uniform magnetic field. A deuteron has the same charge as the proton but has twice its mass. The ratio of the acceleration of the deuteron to that of the proton is:
a. 1. b. 2. c. 0.5. d. There is no acceleration in this case.
When you stand at rest on a pair of bathroom scales, the readings on the scales will always
A) each be half your weight. B) each equal your weight. C) add to equal your weight. D) add up to more than your weight.