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A ball is thrown by an Italian physicist from the top of the leaning tower of Pisa at a speed of 8m/s, and falls to the ground in a parabolic motion, landing some distance from the base of the tower. Just before it reaches the ground, the ball's speed is 34 m/s. Neglect air resistance and determine the height of the leaning tower of Pisa.
A 6,000 lb car is traveling SW at 40 mph. it is hit by another car that weighs 7,000 lb and is traveling NNE at 50 mph. What is the speed and direction of the cars immediately after the collision
Starting from rest, you pull the string with a constant force F = 8 N along a nearly frictionless surface. At the instant while the center of the disk has moved a distance x = 0.12 m, a length d = 0.27 m of string has unwound off the disk.
A person fishing from a pier observes that five wave crests pass by in 7.4 s and estimates the distance between two successive crests to be 4.3 m. The timing starts with the first crest and ends with the fifth. What is the speed of the wave? m/s
A series RLC circuit has R = 50 %uF057, L = 2.7 %uF06DH, and C = 52 nF. find the rms amplitude of the current flowing through the circuit
q1. how many 104 w lightbulbs can you use in a 134 v circuit without tripping a 14 a circuit breaker? the bulbs are
A soccer player extends her lower leg in a kicking motion by exerting a force with the muscle above the knee in the front of her leg. What is the force exerted by the muscle if its effective perpendicular lever arm is 1.80 cm
A constant force is applied to an object, causing the object to accelerate at 11m/s2. What will the acceleration be if the force is halved
A block of mass M=0.623kg is floating stationary in a beaker of water. What is the magnitude and direction of the buoyant force acting on the block
An automobile tire has a volume of 1 .64 x 10-2 m3 and contains air at a gauge pressure of 165 kPa when the temperature is 0.000C. What is the gauge pressure of the air in the tires
A string 1.50 m long will break if the tension in it exceeds 2X10^2N. How fast (in m/s) can a rock of mass 1.50 kg be whirled in a circular horizontal path if the string is not to break? Assume the rock moves on a smooth horizontal surface (No fri..
A small button placed on a horizontal rotating platform with diameter 0.310m will revolve with the platform, How far from the axis can the button be placed, without slipping, if the platform rotates at 59.0rev/min
A horizontal pipe carries a smoothly flowing liquid with density 1.27 × 103 kg/m3. What is the pressure difference between location 2 and location 1
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