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A firefighter who weighs 712 N slides down a vertical pole with an acceleration of 3.00 m/s2, directed downward. What are the
(a) Magnitude and
(b) Direction (up or down) of the vertical force on the firefighter from the pole and the
(c) Magnitude and
(d) Direction of the vertical force of the pole on the firefighter?
What is the average speed of the Jet Aircraft during takeoff?Compute the distance covered by the Jet Aircraft during the takeoff? What is the acceleration of the Jet Aircraft during the takeoff? Compute the force acting on the Jet Aircraft during the..
A tennis ball is struck at the base line of the court, 11.5 m from the net. The ball is given an initialvelocity with a horizontal component equal to 27.0 m/s at an initial elevation of 1.21 m.
A hardworking ant must supply 0.00805 N to pull a small piece of fruit at constant velocity over a distance of 9.60 cm up a small hill to the entrance of the colony. calculate the work done by the ant by pulling the piece of fruit up the hill
Calculate the total number of electrons bombarding the target of an X-ray tube operated at 100 mA for 0.1 seconds
A particle travels along a straight line with a velocity of v=(20 - 0.05s2) m/s, where s is in meters. Determine the time required to move the 15 m
a ball is tied to a string l and suspended from a nail in the wall. the ball is displaced from its equilibrium position
A bead of mass m slides on a frictionless wire under the influence of gravity. The wire has a parabolic shape and rotates with a constant angular velocity ?. Set up Hamilton's equations of motion.
a stationary particle of charge q 2.4 times 10-8 c is placed in a laser beam an electromagnetic wave whose intensity
A model rocket is launched straight upward with an initial speed of 49.4 m/s. It accelerates with a constant upward acceleration of 2.25 m/s2 until its engines stop at an altitude of 187 meter. Compute the maximum height reached by the rocket
assume the intensity of sunlight is 1.00 kwm2 at a particular location. a highly reflecting concave mirror is to be
A 300kg ball with a speedof 6.0 m/s strikes a wall at an angleof 30degrees and then rebounds with the same angle and speed. What is the impulse on the ball from the wall
An airplane propeller is 2.68 m in length (from tip to tip) and has a mass of 137 kg. When the airplane's engine is first started, it applies a constant torque of 1930 N . m to the propeller, which starts from rest. What is the average power outpu..
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