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Question: A capacitor is connected across the terminals of an ac generator that has a frequency of 440 HZ and supplies a voltage of 24V. When a second capacitor is connected in parallel with the first one, the current from the generator increases by 0.18A. Find the capacitance of the second capacitor.
A football is kicked 50.4 meters. If the ball is in the air 4.54 s, with what initial velocity was it kicked
A 7.76 kg crate slides on a horizontal surface. The coefficient of kinetic friction between the surface and the crate is 0.34. find the magnitude of the external force acting on the crate
A mass of 2.4 kg is moving at 19.2 m/s in the positive x direction. What is the total kinetic energy of both masses
A horizontal desk surface measures 2.08 m x 1.73 m. If Earth's magnetic field has magnitude 0.495 mT and is directed 64.8° below horizontal, what is the magnetic flux through the desk surface.
Differentiate the formula for the energy density per unit frequency of a blackbody to find the value of hu at which the energy density reaches a maximum. (This will be a function of temperature and is a form of Wien’s Law. You can find the constant b..
A laser beam of unknown wavelength passes through a diffraction grating having 5460lines/cmafter striking it perpendicularly. At what angle will the next pair of bright spots occur
The energy of the first excited state of a hydrogen atom is -0.34eV +/- 0.0004eV. What is the minimum average lifetime for this state
Light of a particular wavelength shines on a single slit of width 1.150e-4 m, creating a diffraction pattern with the first dark fringe at an angle of 0.224° from the centerline. What is the distance between the centers of the two slits
An optical engineer needs to ensure that the bright fringes from a double slit are 15.7 mm apart on a detector that is 1.61 m from the slits. how far apart should the slits be
question a proton charge 1.6 x 10-19 travels through a magnetic field of 1.78t with a velocity of 2.3 x 105 msec. what
For a certain change, the value of ëU is -2.37 kJ. During the change, system absorbs 650 joules. How much work did the system do.
a rock is sliding alone a horizontal surface with a veolcity of 8.5 ms . it eventually stops due to friction. what is the power produced by the fricition
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