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A string is wrapped several times around the rim of a small hoop with radius 8.00 cm and mass 0.180 kg . The free end of the string is held in place and the hoop is released from rest (the figure (Figure 1) ). After the hoop has descended 95.0 cm , calculate the angular speed of the rotating hoop and the speed of its center.
An athlete needs to lose weight and decides to do it by "pumping iron." If the weight is lifted once every 1.90 s, how long does the task take (in hours)
A two mmeter high tank is full of water. A hole appears at its middle. What is speed of efflux
a catapult launches a rock towards a hill 500m away. the rock lands on the hill 20m above the release point of the rock. find the max height of the rock during flight
A car is parked 21.0 m directly south of a railroad crossing. A train is approaching the crossing from the west, What frequency does the car's driver hear when the horn blast reaches the car
Asterix and Obelix are standing on skateboards on level ground 2 m apart. Obelix holds a ball of mass 1 kg. in which direction will the center of mass move
A wire carrying a 2A current is placed at an angle of 60 degrees with the respect to a magnetic field of strength 0.2T. obtain the magnitude of the magnetic force acting on the wire
A heavy steel ball is hung from a cord to make a pendulum. The ball is pulled to the side so that the cord makes a 5 degree angle with the vertical. what force is required to hold the ball
A subatomic particle with mass m initially at rest suddenly decays. what is the velocity of the other particle created
A 11.0-g wad of sticky clay is hurled horizontally at a 110-g wooden block initially at rest on a horizontal surface. The clay sticks to the block. obtain the speed of the clay immediately before impact
Two large, flat metal plates are separated by a distance that is very small compared to their height and width. Find the field outside the plates on either side
A student moves a box of books by attaching a rope to the box and pulling with a force of 90.0 N at an angle of 30.0 degrees. Find the acceleration of the box
A newly discovered planet has twice mass of the earth, but the acceleration because of gravity on the new planet's surface is exactly the same as the acceleration due to gravity on the earth's surface. What is the radius Rp of the new planet in te..
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