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Question: Derive an expression and numerical value for the distance of closest approach of an alpha to a gold nucleus, when the impact parameter is b=0 (i.e., a head-on collision). Use conservation of energy, and take the alpha particle energy to be 6 MeV (1 MeV = 1.602E-13 J). How does this compare with the Bohr radius? Why the difference, if any?
A grandfather clock is controlled by a swinging brass pendulum thatis 1.0 m long at a temperature of30.°C. What is the length of the pendulum rod when the temperature drops to 0.0°C
A block of mass 2.5 kg is placed on a horizontal table; the coefficient of friction between block and table is 0.20. find the tension in the rope connectiong the two blocks
suppose you had two small boxes each containing 1.0g of protons. if one were placed on the moon by an astronaunt and
A 43.0kg seal at an amusement park slides from rest down a ramp into the pool below. what is the work done by kinetic friction
Assuming no air resistance, What was the horizontal distance between Mark and the swimming pool when he fell from the helicopter?
A fictional spaceship accelerates at a constant rate of 0.107 m/s2. What would be its final velocity
steam at 75kpa and 13 percent quality is contained in a spring-loaded piston cylinder device with an initial volume of
we can detect a visual binary system with an earth- orbit baseline parallax or 0.25''. The systems orbital period is 779.9 days and we see the combined semi- major axis subtend a total angle of 1.254''. What is the mass of the two stars?
A weight of 200 N is hung from a spring with a spring constant of 2500 N/m and lowered slowly. How much will the spring stretch
An engine running at 38.3 percent efficiency receives 287 J of heat from the hot reservoir through each cycle. How much heat is transferred to the cold reservoir through each cycle?
Calculate the wavelength (in m) of a 1,020 Hz sound in air at room temperature and pressure where the velocity of sound is 344 m/s.
Estimate the gas-film mass-transfer coefficient by two appropriate correlations, one that includes the packed bed void fraction, and a simpler correlation that does not account for the void fraction.
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