Since accelerations are equivalent to gravity, a person could cancel the effects of Earth's gravity by

A) falling from a high place.
B) going into orbit around Earth.
C) Both of the above.
D) accelerating straight upward at an acceleration of 1g.
E) Nonsense--you can't cancel the effects of gravity.

C

Physics & Space Science

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Both the classical and quantum mechanical probability densities predict for a simple harmonic oscillator that

a. the probability of the particle being at that location will be greatest at regions of greatest potential energy. b. the particle has a finite probability of being in a region with V > E, where E is the total energy of the system. c. at very large values of n (the number of energy state), the particle will most likely be detected furthest from the equilibrium position within its classically defined range of motion d. the minimum energy of the oscillating particle is zero

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Physics & Space Science

A__________is a device that separates light by wavelengths to produce a spectrum

A) lens B) mirror C) spectrograph D) interferometer

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Physics & Space Science

Proof that Earth revolves around the Sun is obtained by the use of ______________ and the ______________

Fill in the blank(s) with correct word

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Physics & Space Science

An alpha particle is a nucleus of helium. It has twice the charge and four times the mass of the proton. When they were very far away from each other,

but headed toward directly each other, a proton and an alpha particle each had an initial speed of 0.0030c, where c is the speed of light. What is their distance of closest approach? Hint: There are two conserved quantities. Make use of both of them. (c = 3.00 × 108 m/s, k = 1/4??0 = 8.99 × 109 N ? m2/C2, e = 1.60 × 10-19 C, mproton = 1.67 x 10-27 kg) A) 3.3 × 10-13 m B) 2.6 × 10-13 m C) 2.1 × 10-13 m D) 2.9 × 10-13 m

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Physics & Space Science