Physics

Find the temperature of an ideal gas being quasi-statically compressed by 700 j of work to one-third of its initial volume
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Power transmission lines have transformers between the high voltage supply linesand the consumer (household or home). these transformers -
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The best measurements of the mass of the black hole at the galactic center come from:.
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define boiling point
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Which of the following statements regarding VDGSSystems are true? (Select ALL that are true.)You can guess what type of aircraft is being parked.If the system stops the aircraft, you can just manually continue to park it.You do not need to investigate the reason for the stop.Anyone can give the "Stop" signal if a threat to the safety of the aircraft isobserved.You must power on and check the system before arrival.A qualified agent must man the Emergency stop.
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HELP PLEASE! DUE TONIGHT! If the wind speed in the top figure increased, what would happen to the planes ground speed?
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Jack and jill sit next to each other in class. She has a mass of 45 kg and his mass is 60 kg. If they are 0. 250 meters apart what is the gravitational force between them
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Which of the receptors are the mechanoreceptors that detect motion and sense gravity?.
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What does lightning have in common with the shock you receive when you touch a doorknob?.
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A structural plate component of an engineering design must support 207 mpa in tension. If an aluminum alloy is used for this application, what is the largest internal flaw size that this material can support? assume the shape factor is 1 and that for aluminum kic = 25. 6 mpam and yield strength is 455 mpa
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How do the wavelengths of ultraviolet light compare to those of visible light, infrared waves or radio waves? Ultraviolet light exhibits
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The lowest note on a piano is27. 5 Hz. To fit inside the piano,the string for the low note can't belonger than 1. 20 m. If it takes thefull length, what is the speed ofthe wave in the string?(Unit = m/s)
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(a)(i) A galaxy moves away from the Earth at a speed of 3.9 104 km/s.The speed of light is 3.0 105 km/s.Light from the galaxy is emitted with a wavelength of 6.2 107 m.Calculate the change in the wavelength of the light that is received by an observer on the Earth.(ii) Calculate the wavelength of the light that is received by the observer on the Earth.(b)One of the pieces of evidence for the Big Bang theory is the red-shift of galaxies. Explain how the red-shift of galaxies supports the Big Bang theory.
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Calculate the theoretical value of the ratio m/r using adequate equation. What is the experimental value of the ration m/r based on your graph form? Calculate the percent discrepancy between the theoretical value and your experimental value on the ration m/r.Radius = 0.1m, Speed = 0.7422/0.1=5.504m/s2From graph of F vs. m:Slopeslope=5.4260.01182N/kgTheoretical value: 5.504m/s2.
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An electric golf cart develops 1.25 kW of power while moving at a constant speed: (a) Express its power in horsepower: (b) If the cart travels 200 m in 35.0 %, what force is exerted by the cart?
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What pathway in the rock cycle might rock take nextv if it is subjected to uplift?
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2.How did Robert Boyle demonstrate that sound needs a medium through which to travel?He found that an alarm watch in a vacuum did not make asound.He found that the speed of sound varied under differentconditions.MacBook AirHe found that an alarm watch under water did not make asound.He recorded the time that distant pistol fire was heard.
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A lamp is connected to the power supply. The lamp requires an input potential difference of 5. 0VThe alternator generates a potential difference of 1. 5VThe primary coil of the transformer has 150 turns. Calculate the number of turns needed on the secondary coilNumber of turns on the secondary coil = ?
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When a light ray crosses from water into glass, it emerges at an angle of 30 with respect to the normal of the interface. What is its angle of incidence?
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If you were to take a volleyball scuba diving with you what would be its new volume if it started at the surface with a volume of 2. 00L. Under a pressure of 752. 0 mmHg and a temperature of 20. 0C? On your dive you take it to a place where the pressure is 2943 mmHg, and the temperature is 0. 245C
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Two skaters are standing in the middle of an ice skating rink. Skater 1 has a mass of 50kg and Skater 2 has a mass of 45kg. When they push off from one another, Skater 1 has a speed of 2 m/s. What must be the speed of Skater 2?
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In the figure, a horse pulls a barge along a canal by means of a rope. The force on the barge from the rope has a magnitude of 7890 N and is at the angle = 13 from the barge's motion, which is in the positive direction of an x axis extending along the canal. The mass of the barge is 9500 kg, and the magnitude of its acceleration is 0. 12 m/s2. What are (a) the magnitude and (b) the direction (measured from the positive direction of the x axis) of the force on the barge from the water? Give your answer for (b) in the range of (-180, 180]
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A simple circuit exists with two identical light bulbs. The two light bulbs are in series with one another. If one light bulb is removed, which of the following would occur? The current would increase. The current would decrease. The total resistance would increase. The total voltage would decrease.
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A small Aeroplane of mass 600kg has an electric motor powered by fuel cells. Fuel cells use hydrogen gas and provide an electric current. When the Aeroplane is working, the energy changes are chemical --> electrical --> kineticelectrical --> chemical -->kineticelectrical --> kinetic --> chemicalkinetic --> chemical --> electrical
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