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Assume that (i) the energy released per fission event of 235U is 208 MeV, and (ii) 30% of the nuclear energy released in a power plant is ultimately converted to usable electrical energy. Approximately how many fission events will occur in one second in order to provide the one GW electrical power output of a typical power plant? (1 eV = 1.6 x 10-19 J)
What is the surface temperature of Betelgeuse, a red giant star in the constellation of Orion, which radiates with a peak wavelength of about 970 nm? Rigel, a bluish-white star in Orion, radiates with a peak wavelength of 145 nm. Find the temperature..
A clarinetist, setting out for a performance, grabs his 3.19-kg clarinet case (including the clarinet) from the top of the piano and carries it through the air with an upward force of 36.0 N. Find the case\'s vertical acceleration
a meter stick is held vertically with one end on the floor and is then allowed to fall. find the speed of the other end
A standing wave is set up in a 200-cm string fixed at both ends. The string vibrates in 5 distinct segments when driven by a 120-Hz source. What is the fundamental frequency for the string
A stone used to grind wheat into flour is turned through 12 revolutions by a constant force of 21.6 N applied to the rim of a 9.2-cm-radius shaft connected to the wheel
If instead the second disk is set spinning at 580 rpm in the direction opposite the first disk's rotation, what is the angular speed after coupling
When a star has exhausted its hydrogen fuel, it may fuse other nuclear fuels. At temperatures above 1.0 108 K, helium fusion can occur. Write the equation for the following processes.
A cord with a mass of 500g is tied between two supports. The tension in the cord is 35N and it takes a wave 0.55s to travel from one end to the other. How long is the cord
a an ionization chamber is used with an electrometer capable of measuring 50microa. calculate the rate at which
A typical ten-pound car wheel has a moment of inertia of about0.35 \; \rm kg\cdot m^2. The wheel rotatesabout the axle at a constant angular speed making 70.0 fullrevolutions in a time interval of 7.00 s.
An elasticconducting material is stretched into a circular loop of15.0 cm radius. What emf is induced in the loop at that instant
Two forces are the only forces acting on a 3.0 kg object whichmoves with an acceleration of 3.0 m/s2 in the positive y direction.If one of the forces acts in the positive x direction and hasmagnitude of 8.0 Newtons, what is the magnitude of the other..
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