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The soccer goal is 21.78 m in front of a soccer player. She kicks the ball giving it a speed of 18.69 m/s at an angle of 25.43 degrees from the horizontal. If the goalie is standing exactly in front of the net, find the speed of the ball just as it reaches the goalie.
A string trimmer is a tool for cutting grass and weeds; it utilizes a length of nylon "string" that rotates about an axis perpendicular to one end of the string. what is the length of the rotating string
suppose a gas that absorbs solar radiation has a uniform mixing ratio of 1g kg^-1 and an absorption cross section of 5m^2kg^-1. At what altitude will the maximum rate of energy absorption per unit volume occur
Two loudspeakers in a plane, 5 m apart, are playing the same frequency. If you stand 12 m in front of the plane of the speakers, What is the frequency of the sound
In a model AC generator, a 503 turn rectangular coil 5.0 cm by 21 cm rotates at 120 rev/min in a uniform magnetic field of 0.59 T. What is the maximum emf induced in the coil
question1find out the tension in each of the two ropes supporting a hammock if one is at an angle of 14 above
A 63.5kg astronaut is doing a repair in space on the orbiting space station. She throws a 2.35kg tool away from her at 3.60m/s relative to the space station. With what speed will she begin to move\\
A3.50-kg block starts from rest at the top of a 30.0° incline and slides a distance of1.90m down the incline in1.80s. Find the magnitude of the acceleration of the block
A 1.50 V battery supplies 0.350 W of power to a small flashlight for 20.0 min. How much charge does it move
Consider a capacitor created when two identical conducting plates are placed parallel and close to each in other in vacuum, what is the magnitude of the electrostatic force between the charged plates, Is the force attractive or repulsive
A bead of mass m slides without friction down a track and around a loop-the-loop of radius R. The initial height of the track is h = 3.5R. What is the speed of the mass after going around the loop
A ball is thrown directly downward with an initial speed of 8.60 m/s, After what time interval does it strike the ground
An oil rig in the gulf is held at its designated drilling location by 3 tugboats. tugboat A oulls with 42000 N straight in the east direction. Tugboat B pulls at an angle of 50 degrees north of west. tugboat C pulls 25 degress west of south. draw ..
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