Physics, 12.03.2020 20:34, RealGibbon857
An alpha particle has a mass of 6.61 Γ 10β27 kg and bears a double elementary positive charge. Such a particle is observed to move through a 5.1 T magnetic field along a circular path of radius 0.19 m. The charge on a proton is 1.60218Γ10β19 C. What speed does it have
Answers: 3
Physics, 22.06.2019 16:50, lizzepacheco
Acommercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -35Β°c by rejecting waste heat to cooling water that enters the condenser at 18Β°c at a rate of 0.25 kg/s and leaves at 26Β°c. the refrigerant enters the condenser at 1.2 mpa and 50Β°c. if the compressor consumes 3.3 kw of power, determine (a) the mass flow rate of the refrigerant, (b) the refrigeration load, (c) the cop, and (d) the minimum power input to the compressor for the same refrigeration load.
Answers: 2
Physics, 22.06.2019 21:10, ineedhelp2285
An athlete swings a ball, connected to the end of a chain, in a horizontal circle. the athlete is able to rotate the ball at the rate of 8.13 rev/s when the length of the chain is 0.600 m. when he increases the length to 0.900 m, he is able to rotate the ball only 6.04 rev/s. (a) which rate of rotation gives the greater speed for the ball? 6.04 rev/s 8.13 rev/s (b) what is the centripetal acceleration of the ball at 8.13 rev/s? m/s2 (c) what is the centripetal acceleration at 6.04 rev/s? m/s2
Answers: 2
Physics, 22.06.2019 22:30, shadowz8813
Materials will have different energies associated with the electrons inside them. this is related to how strongly bound they are by their work function. if we sandwich a material with a very low energy between two materials with a high energy, we create a trap for an electron. if this trap is very narrow in one direction in comparison to the others, this is approximately a 1-dimensional box that confines the electron. what is the lowest energy of an electron in the box if the thinnest direction across the materials is 4.81 nm?
Answers: 3
An alpha particle has a mass of 6.61 Γ 10β27 kg and bears a double elementary positive charge. Such...
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