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A disk rotates about its central axis starting from rest and accelerates with constant angular acceleration. At one time it isrotating at 9 rev/s. 50 revolutions later, its angular speed is19 rev/s.
a) Calculate the angular acceleration.b) Calculate the time required to complete the 50 revolutions mentioned.c) Calculate the time required to attain the 9 rev/s angular speed.d) Calculate the number of revolutions from rest until the timethe disk attained the 9 rev/s angularspeed.
Flight to Mars. To send a satellite from Earth to Mars, a rocket must accelerate the satellite until it is in the correct elliptical orbit around the sun. What is the semimajor axis of the satellite's orbit
A stone is thrown horizontally at a speed of 4.9 m/s from the top of a cliff 89.5 m high, how long does it take the stone to reach the bottom of the cliff.
A Carnot refrigerator extracts 30.0 kJ as heat during each cycle, operating with a coefficient of performance of 5.00. find the energy per cycle transferred as heat to the room
An aquarium tank has inside dimensions of 1.5 m by 0.70 m by 0.60 m, what mass of water (in kilograms) would it contain
two long parallel wires 5.50 cm apart carry 15.5 a currents in the same direction. determine the magnetic field
what is the maximum instantaneous power dissipated by a3.0hp pump connected to a 240-Vrms ac power source, what is the maximum current passing through the pump
Your friend recently purchased a musical instrument that generates sound waves using several strings. Determine the length of the strings of this instrument
A transformer with a turns ratio (secondary:primary) of 1:80 is used to step down the voltage from a 120-V wall socket to be used in a battery recharging unit. What is the voltage supplied to the recharger?
On earth, two parts of a space probe weigh 14000 N and 3500 N. These parts are separated by the center-to-center distance of 8m and may be treated as uniform spherical objects. Find out the magnitude of the gravitational force that each part exerts o..
a 150 gm ice cube at 0.0 celcius is dropped into an insulated cup with 200 gm of water at 15 celcius. describe the final mixture after equilibrium has been reached
Under an outdoor area "yellow" (Na lamp) light, a fiber is placed between but at the edger of two 3 cm glass slides. how thick is the fiber
Consider a pendulum suspended at some location on the Earth. The length of the pendulum can be taken to be much shorter than the radius of the Earth. Approximate the Earth as a sphere. Find an equation for the angle, alpha, that the pendulum make..
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