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A baseball outfielder throws a 0.150 kilogram baseball at a speed of 40.0 m/s and an initial angle of 30 degree. Find the kinetic energy of baseball at highest point of its trajectory?
A fire truck attaches two fire hoses to a hydrant to fight a fire. each hose has a diameter of 20 cm. What is the speed of the water in the fire hoses
IP A uniform electric field of magnitude 6 times 10^3 ;{rm{N/C}} points upward. An empty, closed shoe box has a top and bottom that are 37 cm by 28 cm, vertical ends that are 28 cm by 21cm, and vertical sides that are 21 cm by 37 cm.
bicyclists in the tour de france do enormous amounts of work during a race. for example the average power per kilogram
a steam pipe is covered with 1.50 cm thick insulating material of thermal conductivity .2000 calcm degress c s. how
A 95-kg fullback, running at 8.2 m/s, collides in midairwith a 128-kg defensive tackle moving in the opposite direction.Both players end up with zero speed. What was the change in the tackle's momentum
A small bag of sand is suspended by a wire of length L=1.2 m. A bullet of mass m=8 gr, moving with speed v0=600 m/s in the horizontal direction, What is the mass of the bag
A 4.3 kg mass with an initial velocity of v1 =aˆi, where a = 2.94 m/s collides with and sticks to a 3.05 kg mass with an initial velocity of v1 = bˆj, where b = ?4.8 m/s
Two friends are carrying a crate of mass 200 kg up a flight of stairs. The crate has length 1.25 m and height 0.500 m, What is the magnitude of the upper person's force
Ricardo walks 22.0 in a direction 50.0 west of north. Jane walks 20.0 in a direction 30.0 south of west. They after that stop and turn to face each other.
A 185-kg sculpture hangs from a horizontal rod that serves as a pivot about which the sculpture can oscillate. The sculpture\'s moment of inertia with respect to the pivot is 16.7 kg·m2, and when it is swung at small amplitudes, it is found to oscill..
An object is placed in front of a convex mirror with a 22.6-cm radius of curvature. A virtual image half the size of the object is formed. At what distance is the object from the mirror
At time t=0 a grinding wheel has an angular velocity of 26.0 rad/s. It has a constant angular acceleration of 29.0 rad/s^2 until a circuit breaker trips at time t = 2.50 s. From then on, the wheel turns during an angle of 440 rad as it coasts to a..
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