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As shown in the figure, a pond has the shape of an inverted conewith the tip sliced off and has a depth of 5.0 m. The atmosphericpressure above the pond is 1.01 × 105 Pa. The circular topsurface (radius = R2) and circular bottom surface(radius = R1) of the pond are both parallel toground. The magnitude of the force acting on the top surface is the same as the magnitude of the force acting on the bottom surface.Find (a) R2 and (b) R1.
Two identical uniform poles of mass 50 kg and linear mass density 15 kg/m are supported by pivots 2 m apart on level ground. what angle do the poles make with the vertical
on a day when the speed of sound in air is 340 ms a bat emits a shriek whose echo reaches it .025 s later. how far away
A flywheel with a radius of 0.300m starts from rest and accelerates with a constant angular acceleration of 0.600rad/s2. Compute the magnitude of the tangential acceleration
A uniform ring with a radius of 2.15 cm and a total charge of 6.37 ?C rotates with a constant angular speed of 3.84 rad/s, What is the magnetic moment of the rotating ring
A 300 kg dragster accelerates from rest to a final speed of 110 m/s in 400 m (about a quarter of a mile), What is its average power output in watts and horsepower
q1. water at a temperature of 85f exhibits which of these physical propertiesa. has no definite shapeb. has no definite
A molecule of DNA (deoxyribonucleic acid) is 2.19 µm long. The ends of the molecule becomesingly ionized -- negative on one end, positive on the other. Thehelical molecule acts like a spring and compresses 1.12% upon becoming charged.
A copper vat is 12 m long at room temperature (20 degrees Celsius). How much longer is it as it contains boiling water at 1 atm pressure.
Two stationary positive point charges, charge 1 of magnitude 3.65 and charge 2 of magnitude 1.80 , are separated by a distance of 58. An electron is released from rest at the point midway between two charges, and it moves along the line connecting..
A person standing on a bridge 120m above a river drops a 250g rock. At what speed does the rock hit the water
An electron moves in a circular path perpendicular to a magnetic field of magnitude 0.225 T, find the radius of the circular path
A person driving her car at 49 km/h approaches an intersection just as the traffic light turns yellow. She knows that the yellow light lasts only 2.0 s before turning to red, and she is 30 m away from the near side of the intersection .
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