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A child stands on a playground merry-go-round a distance of 1.50 m from the rotation axis. The coefficient of static friction between the child's shoes and the surface of the merry-go-round is 0.700. Assuming the acceleration of gravity is 9.81 m/s2, what is the maximum constant angular speed of the merry-go-round for which the child will not start to slide?
A wave has an angular frequency of 110 rad/s, Calculate the angular wave number and the speed of the wave
Five-gram samples of copper and aluminum are at room temperature
X-rays of wavelength 0.012 nm scatter from a free electron at scattering angle of 45^0. Find the energy and momentum of the recoiled electrons
A tennis ball on Mars, where the acceleration due to gravity is 0.379 of a g and air resistance is negligible, How high above its original point did the ball go
A slab of a thermal insulator with a cross-sectional area of 110{\rm cm^2} is 2.90{\rm cm} thick. how much heat flows through the slab
Having captured a mouse, an owl is flying towards the barn where it lives to enjoy dinner. How much times passes before the mouse hits the ground
A uniform solid disk with a mass of 28.3 kg and a radius of 0.514 m is free to rotate about a frictionless axle. Forces of 90.0 N and 125 N are applied to the disk, as drawing illustrates.
Equipotentials between two parallel lines with a floating circular electrode. I dont need to know the exact potentials, What is the potential of the circular electrode
A state trooper chases a speeder along a straight stretch of road; both vehicles move at 136 km/h. The siren on the tropper's vehicle produces a sound of 490 Hz. What frequency is heard by speeder? (Take the speed of sound in air to be 343 m/s.)
Suppose the emf of a coil rotating in a magnetic field is zero at t = 0 , and increases to its first peak at t = 0.08 ms. What is the period of the output
You are the science officer on a visit to a distant solar system. Prior to landing on a planet you measure its diameter to be 1.8*10^7 m and its rotation period to be 22.3 hours. what is the mass of the star
A circuit has a battery voltage of 12.0 V, a 5.60 pF capacitor and a 300 kOhm resistor. what energy is stored in the fully charged capacitor
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