Physics, 19.10.2021 14:00 nemorinavory3832
An aircraft weighs 45,000 N (10,117 lb) and requires 597 kW (800 thp) to fly straight and level at a speed of 80 m/s (179 mph). If the engine is capable of developing a maximum power of 1193 kW (1600 bhp) and the propeller efficiency for climbing is 75%, what is the rate of climb for maximum power in fpm
Answers: 2
Physics, 22.06.2019 22:30
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
Physics, 22.06.2019 22:50
Cyclotrons are widely used in nuclear medicine for producing short-lived radioactive isotopes. these cyclotrons typically accelerate h- (the hydride ion, which has one proton and two electrons) to an energy of 5 mev to 20 mev. this ion has a mass very close to that of a proton because the electron mass is negligible—about 1 2000 of the proton’s mass. a typical magnetic field in such cyclotrons is 1.9 t. (a) what is the speed of a 5.0-mev h-? (b) if the h- has energy 5.0 mev and b = 1.9 t, what is the radius of this ion’s circular orbit?
Answers: 1
Physics, 23.06.2019 02:00
Elements that have one valence electron and are very reactive are called
Answers: 1
An aircraft weighs 45,000 N (10,117 lb) and requires 597 kW (800 thp) to fly straight and level at a...
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