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A baseball is hit at ground level. the ball is observed to reach its maximum height avove ground level 3.0 s after being hit. 2.5 s after reaching this maximum height, the ball is observed to barely clear a fence 97.5 m where it was hit. How high is the fence?
An air puck of mass 0.20 kg is tied to a string and allowed to revolve in a circle of radius 0.9 m on a frictionless horizontal table. What is the speed of the puck
a wall clock has a minute hand with a length of 0.48 m and an hour hand with a length of 0.26 m. take the center of the
A source delivers an AC voltage of the form change in v = 98.0 sin (80(pi)t), where change in v is in volts and t is in seconds, to a capacitor. Find the frequency of the source
A 17-kg dog is standing on the edge of a stationary, frictionless turntable of rotational inertia 95kg?m2 and radius 1.70m. What fraction of a full circle does the dog's motion make with respect to the ground
A uniform board is leaning against a smooth vertical wall. Theboard is at an angle above the horizontal ground. Thecoefficient of static friction between the ground and the lower end of the board is 0.550.
atom X moves to the right at .99c and atom Y moves to the left at .99c according to an observer
two beetles run across flat sand starting at the same point. beetle 1 runs 0.46 m due east then 0.75 m at 31o north of
A converging lens has focal length 10 cm. How far from the lens should the object be placed to form a virtual, upright image twice as large as the object
A bucket of water with a mass of 8.0 kg is attached to a rope that is wound around a cylinder. What is the tension in the rope
A 14.9 cm long tendon was found to stretch 3.50 mm by a force of 15.0 N. The tendon was approximately round with an average diameter of 8.22 mm. Calculate the Young's modulus of this tendon
Two equal forces act on the two different objects, one of which has a mass ten times as large as the other. Will the more massive object have the larger acceleration, an equal accelearation, or a smaller acceleration.
A pipe with a diameter of 1m carries water at a pressure of 1000kPa and a speed of 6m/s. what will the pressure and speed be in the smaller diameter section of pipe
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