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A drowsy cat spots a flowerpot that sails first up and then downpast an open window. The pot was in view for a total of0.39 s, and the top-to-bottom heightof the window is 2.20 m. How high above the window top did the flowerpot go?
King Arthur's knights fire cannon from the top of the castle wall. The cannonball is fired at a speed of 60 m/s and an angle of 33. A cannonball that was accidentally dropped from the top of the castle wall hit the moat below in 1.80s.
An object is placed 17 cm to the left of a converging lens of focal length 30 cm. Find the position and magnification of the final image
Two people wish to push a big beer freezer weighing 2000 N up aramp inclined at an angle of 37.0o with the horizontal. The coefficient of kinetic friction between the freezer and theramp is 0.500.
the vehicle is used to transport supplies to and from the bottom of the 25-present grade. each pair of wheels one at a
the air above water is cooled as a result of the water absorbing heat from the air. the density of air is 1.29 kgm3 and
A hard-thrown tennis ball is moving horizontally when it bangs into a vertical concrete wall at perpendicular incidence. What are the directions of its velocity and acceleration just before hitting the wall
Perhaps to confuse a predator, some tropical beetles arecolored by optical interference that is due to scales whosealignment forms a diffraction grating, What is the grating spacing of the beetle
There are two identical small metal spheres with charges +charge and -charge and the distance b/w them is r meters. The spheres are placed in contact then set at their original distance.
1. a 0.05 kg bullet is fired horizontally into a 8.0-kg block of wood suspended by a rope from the ceiling. the block
An inductor has a 51.6-? reactance when connected to a 60.0-Hz source. What is the maximum current in the inductor
A rotating flywheel can be used to store energy. if it is required to store 1.00 x 10^6 J of energy when rotating at 200 rad/s, what is the moment of inertia of the wheel
Two point charges of magnitude 4.0 μC and -4.0 μC are situated along the x-axis at x1 = 2.0 m and x2 = -2.0 m, respectively
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