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when a 2.75kg fan having blades 18.5 cm long is turned off, its angular speed decreases uniformly from 10 rad to 6.3 rad/s in 5 sec. Through what angle does it turn while it is slowing down during the 5 sec.
An object placed on an equal-arm balance scale requires 12 kg to balance it. When object is placed on a spring scale, the spring scale reads 12 kg.
A ladder 8.00 m long leans against the side of a building, what is the horizontal distance from the bottom of the ladder to the building
Suppose a tank contains 770 m3 of neon (Ne) at an absolute pressure of 1.01×105 Pa. What is the increase in the internal energy of the neon
He pushes just hard enough to get the desk moving and continues pushing with that force for 5.00 s. Explain how much work does he do on the desk?
A space station is constructed in the shape of a hollow ring of mass 5.90 104 kg and radius 140 m. The station has 300 crew members (each with average mass 65kg), How much work is done to get the space station spinning
A small metal ball with a mass of 6.19 g and a charge of 6.15 mC is located at a distance of 0.67 m above the ground in an electric field of 11.5 N/C directed to the east
A ship sets out to sail to a point 212 km due north. An unexpected storm blows the ship to a point 156km due east of its starting point. How far must it now sail to reach its original destination.
On a single, light, vertical cable that does not stretch, a crane is lifting a 1,207-kg Ferrari and, below it, a 1,461-kg BMW Z8. Find the tension in the cable above the Ferrari
An athlete crosses a 28 m-wide river by swimming perpendicular to the water current at a speed of 0.8 m/s relative to the water, How fast is the water in the river flowing with respect to the ground in m/s
A student is reading a lecture written on a blackboard. If the writing on the blackboard is 4.84 cm high, what is the height of the image on her retina
Graphically determine the resultant of the following three vector displacements: (a) 34m, 25 degrees north of east ;(b) 48m, 33 degrees east of north; and (c) 22m, 56 degrees west of south.
A roller coaster car has a mass of 500 kg loaded with passengers. The car passes over a hill of radius 15m, What is the force of the track on the car at the top of the hill
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