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A hydrogen like ion Mg 11+ drops from its n=2to its n=1 level. What is the wavelength of the photonemitted? What sort of radiation is this?
A 0.25 kg harmonic oscillator has a total oscillation energy of 9.9 J. If the oscillation amplitude is 20.0 cm, what is the oscillation frequency
When a 23.0-V emf device is placed across two resistors in series, a current of 14.0 A is flowing in each of the resistors. When the same emf device is placed across the same two resistors in parallel, the current through the emf device is 61.0 A. Wh..
What is the pressure change in water going from a 3.2- cm-diameter pipe to a 1.8- cm-diameter pipe if the velocity in the smaller pipe is 8.0 m/s
A 3.1 kg bundle starts up a 30° incline with 178 J of kinetic energy. How far will it slide up the incline if the coefficient of kinetic friction between bundle and incline is 0.30
Five people are playing tug-of-war. Anders and alyson pull to the right with 44 N and 34 N, correspondingly. Calid and Marisol pull to the left with 55 N and 35 N, respectively. With what force and in what direction does Benito pul of the game is tie..
A 380kg piano slides 3.2m down a 27â degrees incline and is kept from accelerating by a man who is pushing back on it parallel to the incline, What is the force exerted by the man
A guitar string is being restrung with a string having a diameter of 1.4 mm and a length of 0.82 m when no tension is applied. If the string has a Young's modulus of 1.4 x 10^11 N/m^2 and is tightened by wrapping it three times around a peg with a 2...
A box of mass 5.8 kg is accelerated from rest by the force across a floor at a rate of 2.0 m/s2 for 8.2 s. Find the net work done on the box.
A capacitor is fully charged by a 3V battery and has 0.02 J of energy stored in it. What is the charge on its side of the capacitor
Four protons, each with charge +e, are fixed at the corners of a square of side length a, Determine magnitude and direction of the electric field E
A neodymium-glass laser emits short pulses of high-intensity electromagnetic waves. Find the average power of each pulse
q1. horse races once around a circular track in a time of 176 s with a speed of 26 ms. what is the radius of the
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