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College Physics Questions

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College Light and Optics
What is a fixed quantity of light energy?
  1. Photon
  2. Light reaction
  3. Photoautotroph
  4. Autotrophs
College Quantum Physics and the Atom
Which range of wavelength is involved in the visible spectrum?
  1. [math]10^-12 m[/math]
  2. [math]4 xx 10^-7 "m to 7" xx 10^-7 m [/math]
  3. [math]10^-2 m[/math]
  4. [math]10^4 m[/math]
College Forces and Motion
The sum of all the external forces on a system of particles is zero. Which of the
following must be true of the system?
  1. The total mechanical energy is constant.
  2. The total potential energy is constant.
  3. The total kinetic energy is constant.
  4. The total linear momentum is constant.
  5. It is in static equilibrium.
College Forces and Motion
If a particle moves in a plane so that its position is described by the functions
[math]x=Acosomegat[/math] and [math]y=Asinomegat[/math], the particle is
  1. moving with constant speed along a circle.
  2. moving with varying speed along a circle.
  3. moving with constant acceleration along a straight line.
  4. moving along a parabola.
  5. oscillating back and forth along a straight line.
College Thermodynamics
Which of the following can be used to calculate entropy changes in reactions?
  1. [math]∆Gº_{reaction}=∑n_{r}∆Gº_f{"reactants"}-∑n_{p}∆Gº_f{"products"}[/math]
  2. [math]∆Gº_{reaction}=∑n_{r}∆Gº_f{"reactants"}+∑n_{p}∆Gº_f{"products"}[/math]
  3. [math]∆Gº_{reaction}=∑n_{p}∆Gº_f{"products"}-∑n_{r}∆Gº_f{"reactants"}[/math]
  4. None of the above
College Quantum Physics and the Atom
Which of the following describes electron spin quantum number?
  1. An orbital holds two electrons, and they have identical spin
  2. An orbital holds three electrons, and they have identical spins
  3. An orbital holds two electrons, and they have opposite spins
  4. An orbital holds three electrons, and they have opposite spins
College Matter
Metals, minerals, water and air are examples of:
  1. natural alloys
  2. inorganic substances
  3. compound gases
  4. proteins
College Thermodynamics
Which of the following correctly represents when the equilibrium point occurs?
  1. When the value of ∆Gº=1, only
  2. When the value of ∆Gº<0, only
  3. When the value of ∆Gº>0, only
  4. At the lowest value of free energy available to the system
College Thermodynamics
Which of the following represents ∆Gº, in terms of temperature?
  1. [math]∆Gº=∆Hº+T∆Sº[/math]
  2. [math]∆Gº=∆Hº-T∆Sº[/math]
  3. [math]∆Gº=∆Hº-T/{∆Sº}[/math]
  4. [math]∆Gº=-∆Hº-T∆Sº[/math]
College Quantum Physics and the Atom
Which of the following correctly describes the changes in frequency and energy, in moving from radio waves to gamma rays?
  1. Energy and frequency both decrease
  2. Energy and frequency both increase
  3. Energy increases, and frequency decreases
  4. Energy decreases, and frequency increases
College Quantum Physics and the Atom
College Thermodynamics
College Quantum Physics and the Atom
How is energy transferred?
  1. in packets of energy called protons
  2. in the form of subatomic particles
  3. in the form of photons and subatomic particles
  4. in the form of photons
College Quantum Physics and the Atom
Which of the following represents stability in bonds on a plot of potential energy vs. distance?
  1. The highest amount of energy
  2. The greatest amount of repulsion
  3. The lowest amount of energy
  4. Both (b) and (c)
College Quantum Physics and the Atom
Which of the following equations represents energy that can be used in problems involving specific energy transitions?
  1. E=[math](-2.178 xx 10^-18 J)(Z^2/n^2)[/math]
  2. ∆E=[math]h/{mv}[/math]
  3. [math]∆E=nhv[/math]
  4. ∆E=hf
College Forces and Motion
A football is tossed up into the air in the +y direction. Which of the following is true at the point where the football reaches the ground?
  1. the velocity of the ball is negative and the acceleration is negative
  2. the velocity of the ball is negative and the acceleration is positive
  3. the velocity of the ball is positive and the acceleration is negative
  4. the velocity of the ball is positive and the acceleration is positive
  5. the velocity of the ball is zero and the acceleration is negative
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