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Physics, 22.06.2019 10:00
The frequencies refer to the sample data collected from a population of interest when performing a hypothesis test comparing two or more population proportions.
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Physics, 22.06.2019 21:10
Two masses are connected by a rope that hangs over a pulley as shown below. the pulley is a uniform cylinder of radius ํ
=0.381meters and mass ํ=3.1ํํ. initially ํ"is on the ground and ํ#rests 2.5 meters above the ground. if the system is released, use conservation of energy to determine the speed of ํ#just before it strikes the ground. assume the pulley bearing is frictionless.
Answers: 2
Physics, 23.06.2019 10:10
Now that we have a feel for the state of the circuit in its steady state, let us obtain the expression for the current in the circuit as a function of time. note that we can use the loop rule (going around counterclockwise): eโvrโvl=0. note as well that vr=ir and vl=ldidt. using these equations, we can get, after some rearranging of the variables and making the subsitution x=erโi, dxx=โrldt. integrating both sides of this equation yields x=x0eโrt/l. use this last expression to obtain an expression for i(t). remember that x=erโi and that i0=i(0)=0. express your answer in terms of e, r, and l. you may or may not need all these variables. use the notation exp(x) for ex.
Answers: 1
Physics, 23.06.2019 14:00
If the wavelength is tripled, while the speed of the wave is held constant, what happens to the frequency?
Answers: 1
Light of wavelength 400 nm falls on a metal surface having a work function 1.70 eV. What is the maxi...
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