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An archer shoots an arrow with a velocity of47.5m/s at an angle of50.5° with the horizontal. An assistant standing on the level ground 150 m downrange from the launch point throws an apple straight up with the minimum initial speed necessary to meet the path of the arrow.
(a) What is the initial speed of the apple?
(b) At what time after the arrow launch should the apple be thrown so that the arrow hits the apple?
At one instant a bicyclist is 43 m due east of a park's flagpole, going due south with a speed of 12 m/s. Then 22 s later, the cyclist is 43 m due north of the flagpole, going due east with a speed of 12 m/s.
As you think about it, you're not sure he threw the ball exactly horizontally, What is the range of speeds with which the ball might have left his hand, Enter the minimum and the maximum speed of the ball
A student sits on a rotating stool holding two 3.9-kg objects. When his arms are extended horizontally, Find the new angular speed of the student
The Mini Cooper is rated at the maximum power of 115. hp (1 hp=746 W), when moving at 80km/h. Suppose that the net force accelerating the car is constant.
A point rotates about the origin in the xy plane at a constant radius of 0.114 m and angular velocity of 7.40 rad/s. What is the amplitude of this motion
A 0.50 kg ball that is tied to the end of a 1.30 m light cord is revolved in a horizontal plane with the cord making a 30° angle, with the vertical. If the cord can withstand a maximum tension of 9.5 N, what is the highest speed at which ball can ..
directed into the plane of the computer screen as shown in the figure. Identify the magnitude and direction of the resultant magnetic field at P.
A 6.00 uC charge is placed at the origin and a second charge is placed on the x-axis at x = 0.300 m. what is the force on the charge at the origin
An electron moves at a speed of 15000 m/s in a circular path of radius 2.2 cm. Find the strength of the magnetic field inside the solieod
A conveyor belt at a quarry lifts 2,000 kg of sand per minute up a vertical distance of 12 meters. The sand is originally at rest, then moves at a speed of 0.20 m/s all along the conveyor belt. What is the instantaneous power produced by this machine..
A 7.80-g bullet moving at 610 m/s penetrates a tree trunk to a depth of 5.80 cm, Use work and energy considerations to find the average frictional force that stops the bullet
charge q1=1 ?C is located at the position (x,y,)=(5 cm, 7 cm). A second charge, q2=2 ?C is located at the position (x,y,)=(5 cm, 0 cm). Calculate the work required to move a third charge
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