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12 Cards in this Set
- Front
- Back
What kind of object is emitted in the decay of 40K?
40^K -> 40^Ar + ? |
A Positron
(Beta Plus) |
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Increasing the frequency of each photon that is directed at the cathode will:
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Increase the speed of the ejected electrons
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As the speed of the jet flying away from the receiver increases, what happens to the distance between adjacent peaks of the transmitted waves, as measured at the receiver?
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It Increases
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A constant acceleration:
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will increase
the velocity at a linear rate |
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Key differences between sound waves and radio waves
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Radio Waves travel at the speed of light, Sound waves travel much slower than radio waves. ~340m/s in air and their speed varies with the medium through which they travel
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formula that relates pressure with
the acceleration of gravity and depth |
P = ρgz, where P is the pressure, ρ is the density of the liquid, g
is the acceleration due to gravity, and z is the depth under the liquid as measured from the surface |
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Melting
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While the temperatures of the solid and the melted
liquid increase as the temperature increases, during the actual melting process, the input heat is used to break the intermolecular bonds in the solid so as to form a liquid. As such, during that brief period in which the solid melts, the temperature of the substance remains constant until all of it is melted |
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a pipe open at both ends with a length of 1 m and a
diameter of 0.1 m,determine the fundamental wavelength |
Fundamental Wavelength:
= 2L/n |
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properties of mechanical waves
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mechanical waves only transport energy, not matter
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Equation to find the final velocity in a totally inelastic collision
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vf =
(m1v1 +m2v2) / (m 1 + m2) |
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Equation: Power in a circuit
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P = IV = (V^2)/R = (I^2)R
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Photoelectric Effect: What happens to the electron when the energy of the incident photon increases?
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An increase in the photon’s energy means that more energy will be transferred to the electron,
making the kinetic energy, and thus speed, of the electron higher. |