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Explain the physical processes by which astronomers are able to estimate the temperature of a gas by observing which spectral lines are present in its spectrum and measuring the relative strength of the lines. This process is known as Balmer thermometry.
How far from the center of the earth must you go so that your weight is half of that at the surface of the earth
assume two cans of differently coloured paint at the same temperature can be mixed together adiabatically. the second law of thermodynamics is simply not relevant to this situation
An object with a mass of m = 4.8 kg is attached to the free end of a light string wrapped around a reel of radius R = 0.225 m, Determine the magnitude of the acceleration of the object
A fighter jet lands on the deck of an aircraft carrier. It touches down with a speed of 70.4 m/s and comes to a complete stop over a distance of 197.4 m, What is the acceleration of the jet
A certain commercial mass spectrometer is used to separate uranium ions of mass 3.92e-25 kg and charge 3.20e-19 C from related species. calculate the thermal energy produced in the cup
A 1200 crate slides 15 down a ramp that makes an angle of 30 with the horizontal.If the crate slides at a constant speed, how much thermal energy is created?
q1. a heavy piece of hanging sculpture is suspended by a 94 cm long 4.6 g steel wire. when the wind blows hard wire
An ultrasonic transducer, of the type used in medical ultrasound imaging, is a very thin disk (m = 0.14 g) driven back and forth in SHM at 1.1 MHz by an electromagnetic coil.
A ball with a mass of 29.0 g is on a short compressed spring. When aimed vertically and suddenly released, Calculate the horizontal distance the ball would travel
A 21.5 g bullet strikes a 0.650 kg block attached to a fixed horizontal spring whose spring stiffness constant is 7.30 x 10^3 N/m and sets it into vibration with an amplitude of 21.5 cm. What was the speed of bullet before impact if the bullet and bl..
Two loud speakers separated by a distance of 2.0 m are in phase. Assume the amplitudes of the sound from the speakers are approximately the same at the position of the listener, For what frequencies is the signal a maximum
you are on a standard elavator . you are holding a fishing rod with a fish you just caught on the fishing line .the fish has a mass of 4kg. how much tension is in the fishing line
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