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A wooden block is pulled 12 m across a frictionless surface using a rope. The tension in the rope is 30 N; and the net work done on the block is 291 J. What angle does the rope make with the horizontal?
The two most prominent wavelengths in the light emitted by a hydrogen discharge lamp are 656 nm (red) and 486 nm (blue). compute the distance between the first-order red and blue fringes
You are now studying a length of wire that has been coiled up to create a circular coil of 4 turns all arranged compactly, The loop has radius of 0.0240 m and a current of 49.5 A, What is the strength of the magnetic field at the center of the loop
A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a frictionless, vertical axle. What is the mass of the wheel
A 1328.0 g mass is on a horizontal surface with μk = 0.32, and is in contact with a massless spring with a force constant of 550.0 N/m which is compressed. Calculate the distance the spring was compressed
You have a string with a mass of 14.1 g. You stretch the string with a force of 8.63 N, giving it a length of 1.93 m. What is the wavelength of the standing wave you create in the string
100.0 W tungsten filament bulb generates 95.0 W of heat, which dissipated through glass bulb which has radius of 3.00 cm and 0.500 mm thick. If thermal conductivity of glass is 0.836 W/m°C, determine difference in temp. between inner and outer sur..
Katherine is attempting a biceps curl with a 100 N dumbbell. She is standing upright, and her forearm is horizontal. What torque is created by the dumbbell about the elbow joint
Wavelengths of light from a distant galaxy are found to be 0.58% longer than the corresponding wavelengths measured in a terrestrial laboratory. Is the galaxy approaching or receding from the earth
The car in the drawing is moving to the left at 35 m/s. The car's horn continuously emits a 2.20 × 102 Hz sound. What is the wavelength of the sound in the direction of motion of the car
A sound source radiates sounds uniformly in all directions. the intensity of the sound at a distance of 100 m is 1.00 x 10^-4 W/m^2. What is the power of the sound source
A small plastic bead has been charged to -15nC, What is the magnitude of the acceleration of a proton that is 0.90cm from the center of the bead
You are on an airplane traveling 30° south of due west at 100.0 m/s with respect to the air. What is the heading of the plane with respect to the ground
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