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The critical angle for total internal reflection at a benzene-air interface is 41.8°. A ray traveling in air has an angle of incidence of 28.0° at the interface. Find what angle does refracted ray in liquid make with the normal?
A coffee-maker contains a heating element that has a resistance of 34 ohms. What is the current in the heating element
a 500kg truck moving at 30 ms strikes a parked 300kg car. they connect together and move forward.a what kind of
A solenoid of n=100 turns per centimeterhas a current i running in it suchthat the resulting magnetic field is B=1T. Find the magnitude of the currenti.
A mass m1 = 5.4 kg rests on a frictionless table and connected by a massless string to another mass m2 = 4 kg, How much work is done by the force F on the two block system
in the form of radioactive decay known as alpha decay an unstable nucleus emits a helium-atom nucleus which is called
A lamp draws a current of 0.50 A when it is connected to a 120-V source. What is the resistance of the lamp? What is the power consumption of the lamp?
A tube of glowing gas emits light at 550nm and 400 nm. In a double-slit apparatus, what is the lowest order 550 nm bright fringes that will fall on a 400 nm dark fringe? What is the corresponding order of the 400nm dark fringe?
A 63.0kg skier is moving at 6.55m/s on a frictionless, horizontal snow-covered plateau when she encounters a rough patch 3.55m long. How fast is the skier moving when she gets to the bottom of the hill
A particle with a positive charge q= 8.6x10^-6C and a mass m= 0.45g moves with velocity v = 8m/s parallel to a wall. Find the sign and magnitude of the magnetic field
The kinetic energy of an object is increased by a factor of 7, by what factor is the magnitude of its momentum changed
Decide the temperature at which the rms (root-mean-square) speed of an He atom equals 990 m/s. What is the rms speed of He on the surface of a certain star, where the temperature is 5374 K? 75. Two narrow slits are illuminated with a laser with a wav..
A 9.10 kg board is wedged into a corner and held by a spring at a 50° angle, as the Illustrating shows. The spring has a spring constant of 196 N/m and is parallel to the floor.
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