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a) What is the direction of the force that you exert on the coin during the toss, but before the coin leaves your hand?
b) Is the magnitude of this force greater than, less than, or equal to the weight of the coin? Explain.
c) What is the direction of the force that you exert on the coin while you are in the act of catching the coin?
d) Is the mangitude of this force greater than, less than, or equal to the weight of the coin? Explain.
In a friction experiment, your wooden plank is horizontal. When a mass of 100 grams is hanging on the weight hanger of mass 50 grams, a slight push makes the block move at a constant speed along the plank. If the mass of a wooden block is 500 gram..
A platinum resistance thermometer has resistances of 190.0 when placed in a 0°C ice bath and 234.8 when immersed in a crucible containing a melting substance. What is the melting point of this substance
A sealed cubical container 22.0 cm on a side contains three times Avogadro's number of molecules at a temperature of 20.0°C
A coil of length l=50 cm and diameter d= 5 cm consists of N= 200 turns. there is a current I= 1 A running thru the coil. Determine: a) the inductance of coil; b) the magnetic flux flowing thru a cross sectional area of the coil.
assume the roller coaster (h1 = 34 m, h2 = 10 m, h3 = 20) passes point A with a speed of 2.00 m/s. If the average force of friction is equal to one sixth of its weight, with what speed will it reach point B? The distance traveled is 45m.
A train is travelling up a 5.0 degree incline at a speed of 2.25m/s when the last car breaks free and begins to coast without friction. a) How long does it take for last car to come to rest momentarily? b) How far did the last car travel before mo..
The 1.5 kg balls are attached to the ends of a thin rod of length 42.0 cm and negligible mass. Through what angle will the system rotate before it momentarily stops
question1a 95 m long train begins uniform acceleration from rest. the front of the train has a speed of 25ms when it
A block of mass 2.0 kg oscillates on a spring with spring constant k= 5 N/M. what is the period of oscillation is rad/s?, what is the new period of oscillation
a coil of nichrome wire is 27.0 m long. the wire has a diameter of 0.390 mm and is at 20.0degc.a if it carries a
A student sits on a rotating stool holding two 4.0-kg objects. When his arms are extended horizontally, Find the new angular speed of the student
Find the force acting on the roof of a 7m x 7m airtight building due to the difference in air pressure created during a hurricane with 78 m/s winds. A large open tank contains liquid with a density of 1200 kg/m3 at a depth of 10 m. A 5 x 10-3 m2 p..
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