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A length of aluminum wire is connected to a precision 10.0 V power supply, and a current of 0.4258 A is precisely measured at 10.0 degrees celsius, What is the unknown temperature
A torque of 11Nm is applied to a heavy wheel whose moment of inertia is 34 kgm2. What is the angular acceleration of the wheel
The magnetic flux through a coil of wire containing two loops changes from -23Wb to +33Wb in 0.57s. What is the emf induced in the coil
What is the rms current in an RL circuit when a 60.0Hz 240V rms ac voltage is applied, What is the phase angle between voltage and current
A sinusoidal voltage ?v = (100 V) sin (200t) is applied to a series RLC circuit with L = 40 mH, C = 120 ?F, and R = 32 ?. What is the maximum current in the circuit
A potter's wheel having a radius 0.49 m and a moment of inertia 10.9 kg·m2 is rotating freely at 52 rev/min. Find the effective coefficient of kinetic friction between the wheel and the wet rag
Light is reflected from a transparent coffee table. When the angle of incidence is 63.3°, What is the index of refraction of the material of the table
A fireworks rocket is launched vertically upward at 40 m/s. At the peak of its trajectory, When does the second fragment reach the ground
The speed of light is 1.10 times as large in material A than in material B. Determine the ratio na/nb of the refractive indices of these materials
A 4.4 cm radius ball rolls down an inclined plane from rest at the top. The angular acceleration of the rolling ball about its center is 185 rad/s^2, How long is the plane
If 1,000 gallons per minute (gpm) of water are flowing through a 4-inch (inside diameter) pipe, what is the average velocity of the water in the pipe
To a person swimming 0.790m beneath the surface of the water in a swimming pool, what is the actual height of the diving board above the surface of the water
Lily is sprinting in a 100 m dash. at he 80 m mark her velocity is 9.5 m/s. What is the velocity of the air relative to Lily
Use Newton law to determine the force applied to the backrest when a 150-lb person leans 40% of his or her body weight against it. Determine the constant requiered for the spring
As a 1240-kg truck travels up a 15.4-m-high hill, the nonconservative forces of friction and the force generated by the engine do work on the truck. determine the change in the truck's kinetic energ
Estimate the rms electric field in the sunlight that hits Saturn, knowing that the Earth receives about 1350 W/m2
The drawing shows a rectangular block of glass (n = 1.52) surrounded by a liquid with n = 1.58. At what angle does the ray leave the glass at point B
A beam of light is traveling in air and strikes a material. The angles of incidence and refraction are 56.1° and 48.5°, respectively
Starting from rest, a 12-cm-diameter compact disk takes 3.3s to reach its operating angular velocity of 2500rpm. How much torque is applied to the disk
A thick layer of oil is floating on the surface of water in a tank. A beam of light traveling in the oil is incident on the water interface , What is the refractive index of the oil
An 9.00-cm-diameter, 390g sphere is released from rest at the top of a 1.50-m-long, 15.0 degree incline. find the sphere's angular velocity at the bottom of the incline
A hoop and a disk, both of 0.68- m radius and 4.0- kg mass, are released from the top of an inclined plane 2.6 m high and 7.7 m long. What is the speed of the disk
A playground merry-go-round has a disk-shaped platform that rotates with negligible friction about a vertical axis. how fast will the disk be turning
A layer of oil (n = 1.45) floats on an unknown liquid. A ray of light originates in the oil and passes into the unknown liquid. What is the index of refraction of the unknown liquid
In a two-slit experiment a third order bright fringe is observed at an angle of 7.10°. If the wavelength of light is 595 nm, what is the slit separation?