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A lamp is suspended by a massless string from the ceiling of a descending elevator which decelerates at 1.7 m/s2. If the tension in the string is 75.0 N, what is the mass of the lamp?
An object with mass 0.180kg is acted on by an elastic restoring force with force constant 10.5N/m. What is the amplitude of oscillation
The orbital angular momentum of an electron has a magnitude of 4.716*10^-34 kg*m^2/s. What is the angular-momentum quantum number l for this electron
an object is shown next to a lens of focal length 50cm. Given that the image is also shown on the right side of the lens, determine the image location
A cylindrical space station of radius R and length L has a density that varies with distance from its center, Calculate the total mass M of the entire space station
Find out the potential difference between r2 and r1
The spring constant for the tendon is the same for both groups, 33 N/mm. Illustrate what is the difference in maximum stored energy between the sprinters and the nonathletes?
A certain superconducting magnet in the form of a solenoid of length 0.520 m can generate a magnetic field of 9.10 T in its core when its coils carry a current of 80 A
A nearest-neighbor pair of Mg2+ ions are separated by a distance of square root 2 a0. Calculate the coulombic force of repulsion between the ions.
an electron in a hydrogen makes a transition between levels and emits a photon with a frequency of 6.91*10^14 hz . find is the electron jumping to higher or lower level
A bicycle is moving to the right at a speed of Vo= 20 mph on a horizontal and straight road. The radius of thebicycle's wheels is R = 1.15 ft. Let P be a point on the peripheryof the front wheel.
Find the power delivered by the good battery, and discuss where this power goes, assuming that the emf's and resistances of each battery remain the same throughout the process
What is the internal resistance of a 12.0-V car battery whose terminal voltage drops to 9.5V when the starter motor draws 77A
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