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A circular surface with a radius of 0.068 m is exposed to a uniform electric field of magnitude 1.43×104 N/C. The electric flux during the surface is 60 N·m2/C. What is the angle among the direction of the electric field and the normal to the surface?
A steel beam that is 7.00m long weighs 330N. It rests on two supports, 3.00m apart, with equal amounts of beam extending from each end. Suki, who weighs 505 N, stands on the beam in the center and then walks toward one end. How close to the end can s..
If the voltage source remains connected to the capacitor, but the air is replaced by a layer of plastic with dielectric constant 2.6. Find what energy stored in the new capacitor
During 5 successive 0.93 min intervals, a runner moves at the following constant speeds: 0.440 km/min, Compute the total distance traveled and the average speed
q1. a 78.9 kg man steps off a platform 4.57 m above the ground. he keeps his legs straight as he falls but at the
The input of a variable auto transformer is connected to an alternating is connected to an alternating emf of 120 V rms. the output is connected to a resistor of 100?. the output voltage varies linearly from 0 at theta = full CCW position to 120 V..
An atom originally in an energy level with E = -8.85 eV absorbs a photon that has wavelength 738 nm. What is the internal energy of the atom after it absorbs the photon/
consider two ZAMS stars: 09 and B0. The effective temperature of the 09 star is 34,500 k. Assuming a hydrogen density of 10^8 m^-3, and Alpha = 3.1 x 10^-19 m^3 s^-1, estimate the Stromgren radius of the stars in pc and AU
Two long parallel wires 40 cm apart are carrying currents of 10 A and 20 A in the opposite direction. What is the magnitude of the magnetic field halfway between the wires
A 10.0 g mass is located 10.0 centimeter from the center of a turn table. Find the coefficient of static friction between mass and turntable
You're an accident investigator at a scene where a drunk driver in a 1900 kg car has plowed into a 1800 kg parked car with its brake set. What do you report for the drunk driver's speed just before the collision
An infinitely long wire is formed as in the diagram on your assignment. It is formed so that it has a circular portion of R = 50cm and the straight portion is located at a distance r from the center of the circular portion. Determine r (in cm) suc..
Two cars collide at an intersection. Car , with a mass of 2000 , is going from west to east, while car , of mass 1300 , is going from north to south at 12.0. How fast was car going just before the collision
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