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Electrons are accelerated by a potential and directed upon a thin salt crystal that has inter-atomic spacing of 0.282 cm. The diffraction pattern of electrons on a CRT screen located 50.0 cm away shows a peak 3.0 mm on either side of the central peak. What was the acceleration potential? (Hint: The electrons are behaving like a wave.)
q1. a cylinderical water tank of radius 10ft and height 30ft is half filled with water. how much work is essential to
Two point charges are separated by 10.0 cm and have charges of +2.00 and -2.00 Coulombs. What is the electric field at a point midway between the two charges
Calculate the amount of energy saved if all bulbs are replaced by CFL (spiral) bulbs (P=25W). Calculate the amount of natural gas (ft3) needed to provide the energy to keep the lights (long + regular) in the E391 lab
What is the total negative charge, in coulombs, of all the electrons in a small 1.05{\rm g} sphere of carbon? One mole of C is 12.0{\rm g} , and each atom contains 6 protons and 6 electrons.
Using a 673-nm wavelength laser, you form the diffraction pattern of a 0.109-mm wide slit on a screen. How far is the screen located from the slit
The resistance of a bagel toaster is 17 ?. To prepare a bagel, the toaster is operated for one minute from a 120-V outlet. How much energy is delivered to the toaster
A magnetic field of 3 Tesla is oriented into the page. A 10 cm long conducting bar is pulled to the right at a constant speed of 3.4 m/s. What is the power supplied by the person pulling the bar
This question requires four answers. A15 Ω resistor, a 0.30 μF capacitor and a16.0 mH inductor are in a series, What is the rms voltage across the inductor
what is the minimum work by the force p to move the 8-kg block to the top of the incline of uk0.4? compare this with
A wheel spinning at 25 rev/s is slowed to a stop by a constant acceleration while turning 50rev. What is the magnitude of the constant acceleration
A point charge q1 = -2.3 x 10^ -6 C is located at the origin of a co-ordinate system. Another point charge q2 = 6.3 x 10^-6 C is located along the x-axis at a distance x2 = 6.1 cm from q1. 1) What is F12,x, the value of the x-component of the forc..
What tension is necessary to tune string properly
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