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a 150g copper bowl contains 220 g of water both at 200degrees c a very hot 300g copper cylinder is dropped intothe
a 737-kg person puts on a life jacket jumps into the water andfloats the jacket has a volume of 314 x 10-2m3 and is
a record turntable is rotating at 33 13 revmin a watermelonseed is on the turntable 65 cm fromthe axis of rotationa
a helicopter is moving horizontally to the right at a constantvelocity the weight of the copter is 53800 newtons the
two identical violin strings when in tune and stretched withthe same tension have a fundamental frequency of 440hz one
when water is boiled under a pressure of 200 atm the heat ofvaporization is 220x106 jkg and the boilingpoint is 120
an object weighs 15n in air and 13n when completely submergedin water what is the volume of water displaced by the
an object moves uniformly around a circular path of radius200 cm making one completerevolution every 215 sa what is the
a 410 g lead bullet traveling at440 ms is stopped by a large tree ifhalf the kinetic energy of the bullet is
a 15 kg copper block is given an initial speed of300ms on a rough horizantal surface because of friction theblock
a 500 gram mass is used as a pendulum bob so that itforms a pendulum that is 20000 metres longthe pendulum isdisplaced
a freezer is used to freeze 30 lof water completely into ice the water and the freezer remain at aconstant temperature
a 0145 kg baseball pitched at 380 ms is hit on a horizontal line drivestraight back toward the pitcher at 520 ms if the
a constant friction force of 25 nacts on a 65 kg skier for 20 s what is the skiers change in
when white light is incident on asheet of transparent material it is found that the emerging lightis red ie wavelength
a cubic box of volume 51 x 10 -2m3 is filled with air at atmospheric pressure at20 degrees celcius the box is closed
a 508 kg box is resting on ahorizontal floor a force of 250 n directed at an angle of326deg below the horizontal
an apartment has a living room whose dimensions are 29 m x39 m x 60 m assume that the air in the room is composed of
a soccer ball whose radius is 11 cm rolls a distance of 10 min 350 s it rolls without slipping what is the angular
perhaps to confuse a predator some tropical beetles are colored byoptical interference that is due to scales whose
a state trooper chases a speeder along a straight stretch of roadboth vehicles move at 160 kmh thesiren on the troopers
a water tank open to the atmosphere at the top has two smallholes punched in its side one above the other the holes are
the two headlights of an approaching automobile are 15 m apart assume that the pupil diameter of theobserver is 44 mm
a solid ball has a rotational inertia of 00314 kgm2 it is rotated by applying a 47 n force tangentiallyto it the radius
a 085 kg mass attached to a vertical spring of force constant150 nm oscillates with a maximum speed of v 035 ms find