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Water flows steadily from an open tank. The elevation ofpoint 1 is 10.0m and the elevation of points 2 and 3 is2.00m. The cross-sectional area at point 2 is0.0480m2 ; at point 3 it is 0.0160m2 . The area of the tank is very large compared with thecross-sectional area of the pipe. Assuming that Bernoulli'sequation applies, compute...
a) the discharge rate in cubic meters per second;
b) the gauge pressure at point 2.
A white billiard ball with mass mw = 1.57 kg is moving directly to the right with a speed of v = 3.43 m/s and collides elastically with a black billiard ball with the same mass mb = 1.57 kg that is initially at rest. What is the final speed of the..
Calculate the average density of a red giant star in grams per cubic centimeter. Take the star's mass to be 2*10^33 gm and its radius to be 3*10^12 cm
A sample of an ideal gas has a volume of 0.0100 m3, a pressure of 100 103 Pa, and a temperature of 300 K. What is the number of moles in the sample of gas
An object is moving in simple harmonic motion with amplitude 0.28 m and total energy 2.5 J. What is the total energy of the system now
You exert a force of 21 N on the head of a thumbtack. The head of the thumbtack has a radius of 5 mm. What is the pressure on your thumb
An archer shoots an arrow horizontally at the target 14 m away. The arrow is aimed directly at the center of target, but it hits 59 cm lower.
A boy in a wheelchair (total mass 51.0 kg) has speed 1.40 m/s at the crest of a slope 2.40 m high and 12.4 m long. Find the work he did in pushing forward on his wheels during the downhill ride
a person has a near point of 40 cm and a far point of 2.0 m. when looking through lenses of focal length -2.0 m, what is the nearest an object can be to be seen clearly
A merry-go-round starts from rest and accelerates uniformly over 10.5 s to a final angular velocity of 6.90 rev/min. Find the person's maximum radial acceleration
An earthquake strikes a small college and shakes all of the books off the shelves. About how much money will this cost the library
An object of mass m = 5.45kg is suspended from the ceiling of an accelerating truck by a string. What is the magnitude of the tension in the string
A flower pot on a balcony railing falls to the ground 9.03 m below. A cat directly beneath the pot sees it begin to fall. How long does the cat have to move
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