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A physics instructor wants to produce a double-slit interference pattern large enough for her class to see. For the size of the room, she decides that the distance between successive bright fringes on the screen should be at least 2.50 cm.
If the slits have a separation d = 0.0175 mm, what is the minimum distance from the slits to the screen when 632.8 nm light from a He-Ne laser is used?
A charge of 810 C was passed through a wire in 5.70min. What was the average electric current during that interval
a car is traveling at 30.0 ms when the driver suddenly applies the brakes giving the car a constant deceleration. the
An elevator is accelerating upward at 1.8m/s^2. Someone is standing on a bathroom scale in the elevator, and it reads 180lb. calculate the person's true weight
The simple harmonic motion of a 300 g mass on a spring is described by y = 20 cm sin(1.2566t). At t = 1/8 s what is the total energy
Cesium is a monovalent metal having a density of 1.870 g/cm3 and a molar mass of 132.9 g/mol. Use this information to calculate the density of charge carriers
How long and how far downthe road does he catch Kyle?
Find the recoil speed of the rifle. ________ m/s (b) If a 700-N man holds the rifle firmly against his shoulder, find the recoil speed of the man and rifle. ________ m/s
Show that the electric and magnetic fields of a point charge moving with constant velocity V are related by B = (1/c^2)(V x E) where c is the speed of light, and B and E are magnetic and electric fields respectfully
The second resonant frequency (a.k.a second harmonic, n=2) of a string of length 60cm has the same frequency as the third resonant frequency (a.k.a. fifth harmonic, n=5) of a 1.0m pipe that is open only at one end
At t=0, a 734 g mass at rest on the end of a horizontal spring (k= 113N/m) is struck by a hammer, Determine the amplitude, maximum acceleration and total energy
A glass plate (n=1.62) is coated with a thin, transparent film (n=1.27). Light reflected at normal incidence is observed as the wavelength is varied continuously. Find the thickness of the film
In an organ pipe open at one end and closed at the other, the fundamental frequency emitted is 240 Hz. find the next overtone frequency
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