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The starting motor of an automobile is turning too slowly, and the mechanic has to decide whether to replace the motor, the cable, or the 12 V battery. The mechanic turns on the motor and measures 11 V across the battery, 3.2 V across the cable, and a current of 45 A. What are the resistances of (a) the battery, (b) the cable, and (c) the motor?
After 10.7 s, a spinning roulette wheel has slowed down to anangular velocity of 2.25 rad/s. Determine the angular displacement of the wheel
An object of mass 250 g is attached to the first object, after which the system oscillates with half the original frequency. What is the mass of the first object
You are moving due North on your tricycle with a velocity(0,20m/s). You aee a fellow tricyclist moving with relativevelocity 15m/s at an angle of 150 degrees. what is your velocity right after the collision
Conclude the magnitude and directional angle
The magnetic field in the region between the poles of an electromagnet is uniform at any time, but is increasing at the rate of 0.060 T/s. What is the magnitude of the induced emf
A wooden raft has a mass of 65 kg. When empty it floats in water (density 1000 kg/m3) with 41percent of its volume submerged. What mass of sand can be put on the raft without it sinking.
A bicyclist travels in a circle of radius 26.0 m at a constant speed of 9.00 m/s. The bicycle-rider mass is 84.0 kg. Calculate the magnitude of the net force on the bicycle from the road
Consider two blocks A and B, of mass mA and mB, coupled by a spring and resting on a horizontal frinctionless table. Describe the subsequent motion
A cylinder contains 1.85 mol of helium gas at 18.5°C. Assume that the helium behaves like an ideal gas. What is the average kinetic energy per molecule
Assume that light of wavelength 550 nm is being observed. Also suppose that diffraction effects, rather than atmospheric turbulence, limit the resolving power of the telescope. Find the greatest distance that these stars might be from the earth.
A 500-turn solenoid, 25 cm long, has a diameter of 2.5 cm. what will be the induced emf in the short coil during this time
An unknown gas is introduced into the aforementioned apparatus using the same tuning fork, and the first resonance occurs when the air column is 6.14 cm long. Find the speed of sound in the gas. m/s
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