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1. A magician pulls a tablecloth from under a table full of dishes without disturbing the dishes. This act demonstrates that
A. gravity holds the dishes still.B. the weight of the dishes is reduced.C. action-reaction forces are in operation.D. the dishes have inertia.E. the dishes have no acceleration.
In the diagram above the open pipe produces a standing wave as shown. What is the frequency of the sound produced in Hertz? (Velocity of sound = 360m/s)
A. 900 HzB. 1800 HzC. 720 HzD. 1440 HzE. 2700 Hz
3. Compare a bucket of boiling water to a cup of boiling water. Which statement(s) can be made about the two containers?
I. The heat content of the two is the same.
II. The temperature of the two is the same.
III. The bucket of water contains more heat and is therefore hotter
A. I onlyB. II onlyC. I and III onlyD. II and III onlyE. I, II, and III only
4. Find the total capacitance for three capacitors in parallel with each other. The value of the capacitors is 10f, 15f and 35 f.
A. 60 fB. 50 fC. 20 fD. 10 fE. 5 f
A hydrogen electron falls from the n = 3 to the n = 1 energy level. Using the chart above, determine how much energy it must release.
A. +.97eVB. +2.85eVC. +10.09eVD. +12.08eVE. +13.06eV
6. Four 6 resistors are available to form a resistor network. Which of the following is NOT a possible value for the total resistance of the resistor combinations?
A. 24B. 12C. 8D. 6E. 1.5
7. A 7.25 kg bowling ball is rolled onto a perfectly level surface at a velocity of 10 m/s. The co-efficient of friction between the surface and the bowling ball is .0025. If the surface is perfectly level and is long enough, how far will the bowling ball roll before it comes to a complete stop?
A. 20 mB. 200 mC. 2 kmD. 20 kmE. 1/2 km
8. The binding energy of a nucleus is equal to
A. the average energy of each nucleon.B. the energy needed to split the nucleus into its parts.C. the mass-energy difference between protons and neutrons.D. the energy necessary to overcome the neutron-neutron repulsion.E. the energy required to remove a proton from the nucleu
9. The graph below shows a typical heat and temperature graph for a substance.
Which of the levels represents the solid phase of the substance?
A. Level AB. Level BC. Level CD. Level DE. Level E
10. The graph below shows a typical heat and temperature graph for a substance.
During the phase on the graph represented at Level D, the substance is
A. evaporating.B. condensing.C. changing phase.D. gaining internal energy.E. All of the above could be correct.
11. When a photon strikes an electron and energizes it, the electron will receive the most energy from the photon if
A. the electron does not spin when it is struck.B. the photon has a high velocity.C. the photon has a low velocity.D. the photon has a long wavelength.E. the photon has a high frequency.
12. A light ray passes from a material of low refractive index to one of high refractive index. Which of the pairs of quantities listed below describes the light ray as it strikes and passes through the interface between the two materials? Match the descriptions below with the statement that best describes the situation.
A part of the light ray remains inside the low refractive index material.
A. The angle of refraction is larger than the angle of incidence.B. The angle of refraction is equal to the angle of incidence.C. The angle of reflection is larger than the angle of incidence.D. The angle of reflection is smaller than the angle of incidence.E. The angle of incidence equals the angle of reflection.
13. A light ray passes from a material of low refractive index to one of high refractive index. Which of the pairs of quantities listed below describes the light ray as it strikes and passes through the interface between the two materials? Match the descriptions below with the statement that best describes the situation.
The light ray inside the material with the higher index of refraction bends toward the normal.
A. The frequency of the wave increases.B. The frequency of the wave decreases.C. The velocity of the wave increases.D. The velocity of the wave decreases.E. Interference from reflected waves causes the light ray to refract.
14. A woman dancing in high-heeled shoes accidentally steps on her partner's foot with the heel of her shoe. Even though her partner outweighs her by 400N and can easily lift her off the floor, he feels pain because
A. her weight is concentrated into a small area.B. her small foot has a large momentum.C. her foot has a large inertia.D. his foot has no inertia.E. his foot has no momentum.
15. If 50g of water at a temperature of 30°C is added to 200g of water at a temperature of 100°C,what will the new temperature of the water be?
A. 68°CB. 80°CC. 74°CD. 86°CE. 92°C
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