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A football player throws a football with a force of 56.8 N at and angle of 350 above the horizontal. The force of gravity acting on the football is 19.3N. Calculate the Net Force on the football the moment the ball was released. assuming that air resistance is negligible.
A 0.240 kg piece ofaluminum that has a temperature of -155°C is added to 1.5 kg ofwater that has a temperature of 2.3°C. obtain the mass of water that has been frozen into ice
An AC adapter for a telephone answering machine uses a transformer to reduce the line voltage of 120 V to a voltage of 5.00 V. The RMS current delivered to the answering machine is 400 mA. If the primary (input) coil of the transformer has 600 tur..
A large 3.00Ã-104 L aquarium is supported by four wood posts (Douglas fir) at the corners. Each post has a square 5.40 cm x 5.40 cm cross section.
The eyepiece of a refracting astronomical telescope has a focal length of 9cm. the distance between objective and eyepiece is 1.80m, What is the angular magnification of the telescope
A block is projected up an inclined, frictionless plane withan intial speed v0. With that intialvlocity, the block travels a distance D and momentarily comesto halt before sliding down the inclined plane.
The homogeneous wire ABCD is bent as shown and is attached to a hinge at C. Determine the length L for which the portion BCD of the wire is horizontal.
two identical conducting spheres fixed in place attract each other with an electrostatic force of 0.108n when their
The last piece has 4 times as much mass as each of the other pieces. Illustrate what is the magnitude of the velocity of the last piece?
question the average distance between mars and earth is about 1.3 x 108 miles. how long would it take tv pictures
A rock weighing 7538 N rock with a volumeof 47 L is completely submerged inmercury. The density of mercury is 13.6 kg/L. Determine the buoyant force on the rock
Rodney weighs 160 lb. He sits in a comfortable chair in which 90% of his weight is supported by his rear end and upper thighs and 10% by his feet, what is the average pressure over this area
Suppose you have a circular race track that has a circumference of 2000 mile. A car drives around the track such that it takes 40 seconds for a lap. What are the average velocity and the average speed
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