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A coil of inductance 90 mH and unknownresistance and a 0.80 µF capacitorare connected in series with an alternating emf of frequency945 Hz. If the phase constant between theapplied voltage and the current is 75°, what is the resistanceof the coil in ohms?
A 3.83 long organ pipe is open on both ends. Find its fundamental frequency Find its first three overtone frequencies
A rock is dropped off a bridge and hits the water below 3 s later. The rock is going 30 m/s before it hits the water. what is the height of the bridge above the water
A block of mass 2.0 kg is pushed against a vertical wall by a horizontal push (P) of 50.0 N. The block does NOT move. Assuming that the coefficient of the static friction, k, is equal to 0.60. Find the force AND the direction of the friction.
The drawing shows a collision between two puckson an air-hockey table. Puck A has a mass of 0.0190 kg and ismoving along the x axis with a velocity of +4.63 m/s. It makes acollision with puck B, which has a mass of 0.0380 kg and isinitially at res..
Constructive interference of sound waves occurs when:
A Gaussian surface has thirty field lines leaving it when it surrounds a point charge of +10.0 and fifty-five field lines entering it when it surrounds an unknown point charge
a proton is placed midway between point a and b. the potential at point a is -20 v and the potential at point b 20 v.
Each speaker produces a tone with a frequency of 200 Hz on a day when the speed of sound is 330 m/s. The person is 1.65 m from one speaker and 4.95 m from the other. What sort of interference does the person sense.
A nonreflective coating (n = 1.30) covers the glass (n = 1.52) of a camera lens. determine the minimum nonzero thickness
A 192-kg satellite is in circular orbit around the Earth and moving at a speed of 4.55 km/s. How much work must be done to move the satellite into another circular orbit
block 2 (mass 1.30 kg) is at rest on a frictionless surface andtouching the end of an unstretched spring of spring constant 292N/m. The other end of the spring is fixed to a wall. Block 1 (mass1.40 kg), traveling at speed v1 = 5.90 m/s,collides wi..
a source emits a sound uniformly in all directions. a radial line is drawn from this source. on this line determine the
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