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A small lead ball, attached to a 1.6-m rope, is being whirled in a circle that lies in the vertical plane. The ball is whirled at a constant rate of four revolutions per second and is released on the upward part of the circular motion when it is 1.6 m above the ground. The ball travels straight upward. In the absence of air resistance, to what maximum height above the ground does the ball rise?
The string of a conical pendulum is 54.0 cm long and the mass of the bob is 0.27 kg. Find the angle between the string and the horizontal when the tension in the string is eight times the weight of the bob
An 85.2kg propeller blade measures 2.23m end to end. Model the blade as a thin rod rotating about its center of mass. Find the tangential speed at the blade tip
An 90.0 kg skydiver jumps out of a balloon at an altitude of 1 180 m and opens the parachute at an altitude of 175m. find the speed of the diver when he lands on the ground
A child tries to swing an adult size baseball bat without choking up on it. She can manage only 180 °/s of angular velocity with a radius of 75 cm. Compute the linear velocity of the endpoint of the bat in each case
Two large metal plates are parallel to each other and separated by 2 cm. they are connected to a 120 V battery. What is the speed of the electron just before it hits the positive plate
Eight identical, non-interacting particles are placed in a cubical box of sides L = 0.2 nm. Find the lowest energy of the system (in electron volts) and list the quantum numbers of all occupied states if (a) particles are electrons and (b) particles..
A 2kg uniform cyclinder is released at the top of a 1.53 m 11 degree incline. What is the velocity when it reaches the bottom
A 1.59 kg block slides on a frictionless, horizontal surface with an speed of 1.54 m/sec. How long is the block in contact with the spring before it comes to rest
Two blocks of masses m1 and m2 are connected by an ideal string passing over an ideal pulley. Find a relation between the variables that would guarantee that the block is initially slowing down
A 50.0 kg box is resting on a horizontal floor. A force of 250 N directed at an angle of 26.0 degrees below the horizontal is applied to the box. What is the minimun coeffiecient of static friction
a river has a 5m/s current due east. With respect to the water, the boats velocity is 12m/s at 60 degress north of east. What is the velocity of the boat relative to the earth
An uncharged nonconductive hollow sphere of radius 11.0 cm surrounds a 16.0 µC charge located at the origin of a cartesian coordinate system. A drill with a radius of 1.00 mm is aligned along the z axis, and a hole is drilled in the sphere. Calculate..
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