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A cat stuck up a tree and has 500 J gravitational potential energy. It then falls. Find the kinetic energy of the cat just before it is caught by the owner. Find the kinetic energy of the cat after it is caught by the owner. Find the wasted energy (after cat is caught by the owner). Disregard air resistance.
A student sits on a rotating stool holding two 2.9-kg objects. When his arms are extended horizontally, Find the kinetic energy of the student before and after the objects are pulled in
A block of mass 1.80 kg is pushed 2.90 m along a frictionless horizontal table by a constant 16.0 N force directed 27.0° below the horizontal.
Two blocks each of mass m = 3.70 kg are fastened to the top of an elevator, If the strings can withstand a maximum tension of 92.0 N, what maximum acceleration can the elevator have before the upper string breaks
A 7.9-N force pulls horizontally on a 1.6-kg block that slides on a smooth horizontal surface. What is the acceleration of the blocks
An Argon ion laser has a gain bandwidth of 2 GHz. Find the number of standing wave cavity modes within the gain bandwidth of the argon ion laser
A point charge of 8.40 mC is surrounded by an equipotential surface with a radius of 0.262 m. What is the electric potential on the surface
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
A water tank open to the atmosphere at the top has two smallholes punched in its side, one above the other. How high does the water stand inthe tank
An L-R-C series circuit L = 0.115H , R = 241? , and C = 7.30?F carries an rms current of 0.450A with a frequency of 401Hz. What is the phase angle in radians
question a rectangular coil of wire is situated in a constant magnetic field whose magnitude is 0.5 t. the coil has an
A thin soap film (n = 1.302) suspended in air has a uniform thickness. When white light strikes the film at normal incidence, violet light (&lambdav = 412 nm) is constructively reflected. At what angle of incidence will green light (&lambdag = 562..
An R = 67.8 ? resistor is connected to a C = 47.8 ?F capacitor and to a ?VRMS = 117 V, and f = 112 Hz voltage source. Calculate the power factor when the capacitor is replaced with an L = 0.335 H inductor
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