Master Physics with Fun Quizzes & Brain Teasers!

when a gas contracts and heats this means that the thermal pressure will
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what is the length of a box in which the minimum energy of an electron is 2.01018 j ?
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a baseball is thrown at a 70 70 angle with the horizontal with an initial speed of 30 mph. find the component form of the initial velocity.
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what is the angular speed , in rad/s,rad/s, of an object that completes 8.00 rev8.00 rev every 18.0 s?
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a brass wire which is 4.00 m long and 4.00 mm in diameter hangs from the ceiling. if a mass of 5.00 kg stretches the wire by 0.160 mm, the stress in the wire is
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why do you think there is a difference between your experimental value and the value on the bottle? which value do you think is the most accurate: yours or the one on the bottle? why?
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a beam of unpolarized light in air is incident on material x, which has an index of refraction of 1.74. at what angle of incidence will the reflected ray be completely polarized
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At a science museum, a stationary bicycle is connected to an electric generator. By pedaling steadily, a museum visitor is able to keep a 75-watt light bulb fully lit for 45 seconds.What is the total energy, in kilojoules, consumed by the light bulb during this time? In kJ
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When laser light of wavelength 632.8nm passes through a diffraction grating, the first bright spots occur at +/- 17.8 degrees from the central maximum.Part CAt what angles do the second bright spots occur?|angle 2|_________ degreesPart DAt what angles do the third bright spots occur?|angle 3|__________ degrees
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when a 45.0 g sample of an alloy at i 00.0 oc is dropped into i 00.0 g of water at 25.0 c, the final temperature is 37.0 oc. what is the specific heat of the alloy?
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what is the average (rms) velocity of nitrogen (diatomic) gas molecules at 20 degrees celsius? (answer: 510m/s)
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a car (m = 851 kg) is following a curve of radius 471 m and has a speed of 20.1 m/s. determine the centripetal force on the car.
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a 13 h inductor carries a current of 1.7 a. at what rate must the current be changed to produce a 52 v emf in the inductor?
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a 5-foot section of 14"" x 8"" rectangular metal ducting weighs 18 pounds. what would be the weight of a 23-foot section of 14"" x 8"" rectangular duct?
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Find the volume of a solid whose base is bounded by the circle x2 + y2 = 4, the cross sections perpendicular to the x-axis.
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While sitting in a boat, you see wave fronts move past the boat. The distance between successive wave crests is 0.60 m, and they are moving at 2.4 m/s. What is the wavelength of these waves? What is the frequency of these waves? What is the period of these waves?
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suppose that the frequency stays the same, explain what would happen (and why) to each of the remaining variables as a result of an increase in tension
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What is the difference between MSwithin and MSbetween?
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true/false. the perturbation potential equation is only valid for small disturbances. why?
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1. Which ecosystem service would suffer the most from the sale of a large section of public forest to a logging company?A. CulturalB. ProvisioningC. RegulatingD. Supporting
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Two 5.0-cm-diameter metal disks separated by a0.61-mm-thick piece of Pyrex glass are charged to a potential difference of 1300V . (Dielectric constant of the Pyrex glass is Pkpyrex=4.7.)A) What is the surface charge density on the disks?B) What is the surface charge density on the glass?
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the threshold wavelength for potassium metal to exhibit the photoelectric effect is 564 nm. calculate a) the work function for potassium
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which of the following ionic compounds would be expected to have the most exothermic lattice energy?
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c = speed of light = 3.00 108 m/sA gamma ray has a very high frequency of about 1019 s1. What is the wavelength of the gamma ray? A. 3.00 1011 m B. 3.00 1027 m C. 3.33 1010 m D. 3.33 1012 mURGENT!!!!!!!!!!
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