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UCBXPhys1Exam2.tst
Howmuchheatmustbeaddedtoa8.0-kgblockoficeat-8°Ctochangeittowaterat14°C? Thespecific heat of ice is 2050 J/kg · C°, the specific heat of water is 4186 J/kg · C°, the latent heat of fusion of ice is 334,000 J/kg, and 1 cal = 4.186 J.
A) 140 kcal B) 780 kcal C) 730 kcal D) 810 kcal E) 180 kcal
the minute hand of a wall clock measures 13 cm from its tip to the axis about which it rotates. the magnitude and angle
A small sphere with a charge of -5.9 10-7 C is placed in a uniform electric field of magnitude 1.9 106 N/C pointing to the west. What is the magnitude and direction of the force on the sphere due to the electric field?
Suppose a long solenoid is wound with 1000 turns per meter and the current in the windings is increasing at the rate of 100.0 A/s. What is the rate of change of the flux in the solenoid
An experimental power plant at the Natural Energy Laboratory of Hawaii generates electricity from the temperature gradient of the ocean. What is the maximum theoretical efficiency of this power plant
A water-skier is being pulled by a tow rope attached to a boat. As the driver pushes the throttle forward, the skier accelerates, Determine the work done by the net external force acting on the skier
the membrane surrounding a living cell consists of an inner and an outer wall that are separated by a small space. Assume that the membrane acts like a parallel plate capacitor in which the effective charge density on the inner and outer walls has..
A conducting rod ( length = 80 cm ) rotates at a constant angularrate of 15 revolution per second about a pivot at one end. Auniform field (B = 60 mT) is directed perpendicularly to the planeof rotation. what is the magnitude of the emf induced betwe..
What is the root-mean-square speed of chlorine gas molecules at a temperature of 320 K? (R = 8.31 J/mol×K, NA = 6.02 ¥ 1023, and the molecular mass of Cl2 = 71)
A slingshot will shoot a 19 g pebble27.0 m straight up. How much potential energy is stored in the sling shot's rubber band
An electron decays from the n = 4 orbit to the n = 1 orbit in the hydrogen atom. If the work function of aluminum is 4.3 eV, does the ensuing photon have enough energy to knock an electron out of aluminum? If so what is the wavelength of the electr..
An airplane is in level flight over Antarctica, where the magnetic field of the earth is mainly directed upward away from the ground. As viewed by a passenger facing toward the front of the plane, is the left or the right wingtip at higher potential..
A 118 kg fullback runs at the line of scrimmage. How fast was he running initially
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