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Alpha particles of energy 9.4 MeV are incident on a silverfoil of thickness 6.8m. For a certain value of the impact parameter, the alpha particles lose exactly one-third of their incident kinetic energy when they reach their minimum separation from the nucleus. Find the minimum separation rmin, the impact parameter b, and the scattering angle?.
The ground level of the neutral lithium atom is doubly degenerate (that is, g = 2). The first excited level is 6-fold degenerate and is at an energy 1.2 eV above the ground level. In the outer atmosphere of the sum, which is at a temperature of ab..
A sealed 63 m3 tank is filled with 5000 moles of ideal oxygen gas (diatomic) at an initial temperature of 270 K. determine The mass density of the oxygen gas
Hoover Dam was built in the 1930s to provide electricity for the southwest U.S. and to prevent the wild Colorado River from flooding. how does pressure vary with depth along the wall of the dam
Two cars suffer head-on collision with each other. What is conserved in the collision?
a vertical containery with base area measuring 14.0 cm by 17.0 cm is being filled with identical pieces of candy each
One ton of coal is burned by a power plant every minute. The energy produced when one kg of coal is burned is 3.2 x 10^7 joules. calculate the efficiency of the power plant
Electrons in a photoelectric-effect experiment emerge from a copper surface with a maximum kinetic energy of 1.10 eV . What is the wavelength of the light?
A disk is reputed to accelerate from 0 to 389 RPM in 3.5 seconds. How many radians does it turn through.
In a serious accident, a nuclear power plant%u2019s reactor vessel cracks, and all of the cooling water drains out. How long will the melting take
A large balloon of mass 233 kg is filled with helium gas until its volume is 327 m3. Assume the density of air is 1.29 kg/m3, Calculate the buoyant force acting on the balloon
A 45.0 kg girl is standing on a 152 kg plank. The plank, originally at rest, isfree to slide on a frozen lake, which is a flat, frictionlesssurface. What is her velocity relative to the surface of ice
A 1.50 V battery supplies 0.350 W of power to a small flashlight for 20.0 min. How much charge does it move
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