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light with a wavelength range of 145-295 nm shines on a silicon surface in a photoelectric effect apparatus, and a revering potential of 3.5 V is applied to the resulting photoelectrons.
(a) What is the longest wavelength of the light that will eject electrons from the silicon surface?
You are setting up two standing string waves. You have a length of uniform piano wire that is 6.0m long and has a mass of 0.150kg . You cut this into two lengths, one of 2.6m and the other of 3.4m , and place each length under tension. What should..
A quarter-pound hamburger with all the fixings has a mass 210g . The food energy of the hamburger is 2.4MJ. What is the energy equivalent of the mass of the hamburger
at what angle to the vertical does the boy throw the can. What is the period of our orbital motion about the center of Galaxy in Earth years.
Keeping a constant speed of 0.6 m/s, a marble of mass 18 g rolls back & forth across a shoebox that is 14 cm high & 2 mm thick. Estimate the probability of its escaping through the wall of the box by quantum tunnelling.
The angular position of a pendulum is represented by the equation ? = 0.0330 cos ?t, Determine the period and length of the pendulum
An electron moves in the positive x-direction a distance of 2.31 m in 2.85·10-8 s, bounces off a moving proton, What is the average speed of the electron
You want to design the loop-the-loop toy. The idea is that a ball of mass m=0.01 kg, determine the minimum height necessary for the ball to remain in contact with the track during the whole loop-the-loop journey
An astronomer observes a comet and measures the wavelength of the H? line to be at 486.2 nm. In the lab, the line is found to be at 486.1 nm. What is the Lorentz factor for the comet
Compute the numerical value for acceleration
suppose that two objects attract each other with a gravitational force of 16 units. what would be the new force of attraction between the two objects
A 60.0 gram golf ball is dropped from a height of 2.00 meters. how much energy did the ball lose
If you place the box on a dolly of mass 5.3 {rm kg} and with coefficient of rolling friction 1.3×10−2, illustrate what horizontal acceleration would that 171 {rm N} force provide?
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