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A 0.20-kg block moves at the end of a 0.50-mstring along a circular path on a frictionless air table. The block's initial rotational speed is 2.0 rad/s. As the block moves in the circle, the string is pulled down through a hole in the air table at the axis of rotation.
-Determine the rotational speed of the block when the string is 0.20 m from the axis.
-Determine the tangential speed of the block when the string is 0.20 m from the axis.
A skier traveling 11.0 m/s reaches the foot of a steady upward 19 degree incline and glides 16m up along this slope before coming to rest. compute the average coefficient of friction
a particle with a mass of 2.5times10-5 kg and a charge of 3.0 uc is released in a parallel plate uniform horizontal
When light with a wavelength 480 nm or shorter shines on a metal surface, a current is measured. A. What is the work function of this metal B. What is the maximum kinetic energy an electron will have if violet light (380 nm) shines on the surface
A ball is thrown on a projectile path with an initial vertical velocity of 30 m/s. find the initial horizontal velocity
Determine the other characteristics of the image (i.e size, orientation, and whether it is real or virtual? Draw a labeled diagram of the situation (approximately to scale and sketch two principal rays)
A 1000 kg is lifted 1 meter. Find the potential energy with respect to the floor and If the car is lifted 2 m high, find the new value of potential energy with respect to the floor
A vertebra is subjected to a shearing force of 445 N. Find the shear deformation, taking the vertebra to be a cylinder 3.00 cm high and 4.00 cm in diameter
The water was originally at 0°C. The specific heat of water = 1.00 kcal/kg×°C, The original temperature of the ice was:
A figure skater is spinning at a rate of 1.8 rev/s with her arms outstretched. She then draws her arms in to her chest, What is her new rate of rotation
Your friend is catching a falling basketball after it has passed through the basket. Her hands move straight down while catching the ball. Determine the average force that her hands exert on the ball while catching it
A helicopter is ascending vertically with a speed of 5.20m/s. at a high of 125m above the earth, a package i dropped from a window. How much time does it take for the package to reach the ground? (Hint: the package's initial speed equals helicopte..
What is the magnitude of buoyancy force ?
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