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A continuous cable of total length 4 m is wrapped around the small pulleys at A, B, C, and D. If each spring is stretched 300 mm, determine the mass m of each block. Neglect the weight of the pulleys and cords. The springs are unstretched when d = 2 m.
A hoop of mass 1.9 kg and radius 55 cm has a string wrapped around its circumference and lies flat on a horizontal frictionless table. What is the angular velocity of the hoop about its center of mass after 2 s
Compute the impact speed of a body released from rest at an altitude h = 525 mi. (a) Assume a constant gravitational acceleration g0 = 32.2 ft/sec2 and (b) account for the variation of g with altitude.
A certain part of an aircraft engine has a volume of 2.3 ft3. Determine the weight of the piece when it is made of lead
A spring stretches 5.0cm when a 0.20kg block is hung from it. If a 0.60kg block replaces the 0.20kg block, how far does the spring stretch?
At what Kelvin temperature does the rms speed of the oxygen (O2) molecules in the air near the surface of the earth become equal to the escape speed from the earth
Two identical twins are falling toward the ground. The twin in the green jumpsuit is going down head first, Which twin reaches the fastest terminal velocity
A wire of radius 0.5 cm carries a current of 150 A that is uniformly distributed over its cross-sectional area. find the magnetic field at the surface of the wire
Question 1A 6.99 m telescope can gather a given amount of light in 45 minutes. Under the same viewing conditions, how much time would be required for a 2.52 m telescope to gather the same amount of light? Report your answer in hours. Include the unit..
John and Joan walk in opposite directions around a circular path, starting from the same point. How long will it take for them to meet
a vacuum cleaner motor can be viewed as an inductor with an inductance of 200 mh. for a 60-hz ac voltage vrms 120
A sphere with mass 2.5 kg and a radius of .50 meter startsrotating from rest and has a constant angular acceleration of 2.5radians/second squared. Determine the torque required to produce this motion
A girl was walking along the street. In the first 7 minutes she walked eastward for 692 m. Then she found out she lost her purse and went back. Calculate her average speed in this process
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