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A 250 kg merry-go-round in the shape of a uniform, solid, horizontal disk of radius 1.50 m is set in motion by wrapping a rope about the rim of the disk and pulling on the rope. What constant force would have to be exerted on the rope to bring the merry-go-round from rest to an angular speed of 0.500 rev/s in 2.00 s?
a 0.15 kg particle moves along an x axis according xt -13 2t 4t2 - 3t3 with x in meters and t in seconds. give an
A house has a floor area of 115 m2 and an outside wall that has an area of 24 m2. Determine the magnetic flux through the wall if the wall faces east
When you jog, most of the food energy you burn above your basal metabolic rate (BMR) ends up as internal energy, Determine the amount of water you lose to evaporation when running for 31 minutes at a rate that uses 400 kcal/h above your BMR
A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. What is the work done on the jet by the catapult
the braking distance of a car is 31m. if the speed of the car is increased by 40 what is the cars new braking distance?
A 100 Ohm resistor dissipates heat to its surroundings, isothermally. The resistor maintains a constant temperature of 300 K. What is the change in entropy of the resistor
A very long straight wire carries current 44 A. In the middle of the wire a right-angle bend is made. Determine the magnetic field at the center of the arc
In proton-beam therapy, a high-energy beam of protons is fired at a tumor. The protons come to rest in the tumor, What is the total charge of the protons that must be fired at the tumor to deposit the required energy
A lens with an index of refraction of 1.60 is to be coated with a material (n = 1.39) that will make the lens nonreflecting for yellow-orange light (? = 515 nm) normally incident on the lens
A bowling ball of mass 7.5 kg and radius 9.0cm rolls without slipping 10 m down a lane at 4.3m/s. calculate the angular velocity of the bowling ball.
In the amusement park ride known as Magic Mountain Superman, powerful magnets accelerate a car and its riders from rest to 38 m/s (around 90 mi/h) in a time of 7.5 s. The mass of the car and riders is 3600 kg. Find the average net force exerted on th..
A single atom of cesium-133 has a mass, in atomic mass units, of 132.90545193 u. Determine the average binding energy per nucleon
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