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A system does 100 J of work on its surroundings and gains 50 J of heat in the process. Calculate the change in the internal energy of the system and the surroundings.
A beam of protons, each with kinetic energy 40 MeV, approaches a step potential of 30 MeV. What fraction of the beam is reflected and what fraction transmitted
In the fastest measured tennis serve, the ball left the racquet at 73.14 {\rm{ m/s}}. How far did the ball travel during the serve
A sign weighing 486 N is suspended at the end of a uniform rod 3.19 m long weighing 565 N. What is the tension in the support cable if it makes an angle of 33.0 deg with the support rod
The wheel of an automobile has a mass of 25 kg and a diameter of 67.0 cm. What is the angular momentum of the wheel about its axle when the automobile is traveling at 25 m/s (90 km/h) on a straight road
A uniform meter stick with a mass of 205 g is supported horizontally by two vertical strings, one at the 0 cm mark and the other at the 90 cm mark. what is tension on the string at the 0 cm mark and at the 90 cm mark.
So you have two different systems both equal contained in a case with the same volume and area. Both cases are in two separate rooms of the same area and volume. Which room is has a higher peak temperature
A 45kg child stands at rest on ice skates. She catches a 0.50kg ball moving horizontally at 9.5 m/s. What is her speed after she caught the ball
The Hubble Space Telescope has a mirror diameter of 2.4m. Assume the telescope is used to photograph stars near the center of our galaxy, 30,000 light years away, using red light with a wavelength of 650 nm.
A free electron and a free proton are placed in an identical electric field. which of the following statement are true?
An object is placed in front of a converging lens in such a position that the lens (f = 17.0 cm) creates a real image located 27.0 cm from the lens. What is the image distance of this new image
When ultraviolent light with a wavelength of 262nm falls upon a clean metal surface, What is the photoelectic threshold wavelength for this metal
A sinusoidal voltage ?v = (60 V) sin (130t) is applied to a series RLC circuit with L = 90 mH, C = 175 ?F, and R = 34 ?. Whats the maximum current in the circuit
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