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The current during a wire 0.80 m long is 5.0 A. The wire is perpendicular to a 0.60-T magnetic field. What is the magnitude of the force on the wire?
What is the angle of incidence in air of a light ray whose angle of refraction in glass is half the angle of incidence? Assume the refractive index of glass is 1.50
A parallel plate capacitor has square plates with sides of length 14 cm. The distance between the plates is 2 mm. How much energy is stored in the capacitor now
A boy pulls his brother on a sled horizontally across all snow-covered field. The coefficient of friction between the snow and the sled is 0.24. what power is being expended by the boy
A racecar travelling at a constant speed turns in a circle with a radius of 10 m. what is the racecar's speed
Two starships, the Enterprise and the Constitution, are approaching each other head-on from a great distance. what wavelength was emitted by the Enterprise
A square coil, enclosing an area with sides 4.6 cm long, is wrapped with 3,149 turns of wire. What average voltage is induced in the coil
The mass of the barge is 9000 kg, and its acceleration is 0.15 m/s2 down the canal. Illustrate what are the magnitude and the direction of the force on the barge from the water?
A water skier has a mass of 73 kg. Find the magnitude of the net force acting on the skier when she is accelerated from rest to a speed of 13 m/s in 9.4 s
A crate that weighs 20 Newton starts from rest and slides down a rough 5.0 meter long ramp, inclined at 25o with the horizontal. Evaluate the speed of the crate at the bottom of the ramp
A ship sets out to sail to a point 197 km due north. An unexpected storm blows the ship to a point 107 km due east of its starting point. In what direction must it now sail to reach its original destination.
n = 3.78 mol of Hydrogen gas is initially at T = 366 K temperature and pi = 2.88×105 Pa pressure. How much work did the external force perform
A 518- physics student stands on a bathroom scale in an 846- (including the student) elevator that is supported by a cable. As the elevator starts moving, the scale reads 464. Find the magnitude of the acceleration of the elevator
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