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A 2.70-kg ball is shot into a 0.500-kg box that is at rest on a frictionless, horizontal table (see figure below); after the collision, the ball is embedded in the box. The box is attached to a 0.30-m rope that is attached to the table on the other end. The ball's initial velocity is perpendicular to the rope as shown. If the ball's initial speed before impact is 13.4 m/s, what is the tension in the rope after the collision?
A certain freely falling object needs 1.75 s to travel the last 40.0 m before it hits the ground. From what height above the ground did it fall?
excess electrons are placed on a small lead sphere with a mass of 8.35 so that its net charge is -3.65times10-9 .find
An initially stationary 2.0 kg object accelerates horizontally and uniformly to a speed of 9 m/s in 3.3 s. What is the instantaneous power due to that force at the end of the interval
The drum of a photocopying machine has a length of 42 cm and a diameter 12 cm. The electric field now above the drum's surface is 2.3x105N/C. What is the total charge on the drum?
An electron has an initial velocity of 1.00 ? 106 m/s in a uniform 9.00 ? 105 N/C strength electric field. What is the direction of the electric field
The dimensions of the picture on a 35.0 mm color slide are x = 24.0mm x y= 36.0. What are the dimensions of the image on the screen
Two identical conducting small spheres are placed with their centers 0.395 m apart. Find the electric force exerted by one sphere on the other
A soccer player kicks the ball toward a goal that is 14.0 m in front of him. The ball leaves his foot at a speed of 19.8 m/s and an angle of 29.0 ° above the ground. Find the speed of the ball when the goalie catches it in front of the net
a guitar of bridge length l 0.76m has new strings put on it. the low e string has a linear density of p 0.08 kgm
A wheel of radius 0.360 m starts from rest and accelerates uniformly to an angular speed of 18.0 rad/s in 6.00 s. Calculate the final linear speed of a point on the rim of the wheel. In other words, relate the velocity v to the angular velocity ? Cal..
The air passes through a large-diameter glass tube, then through a small-diameter tube, and nally through a large-diameter tube again. Find the velocity of the air in the small-diameter tube
a simple heat engine might make use of the warm air around new york city. energy could be taken as heat from the
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