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Consider an adiabatic turbine operating steadily. Does the work output of the turbine have to be equal to the decrease in energy of the steam flowing through it??
Two charged objects experience a mutual repulsive force of N. If the charge of one of the objects is reduced by a factor of and the distance separating the objects is increased by a factor of , what is the new force?
A volleyball player's 3.7 kg arm moves at an average angular velocity of 15 rad/s during execution of a spike. what is the average radius of gyration for the arm during the spike
Estimate the phase difference between the sounds received by your ears when you are facing 90° away from the direction of the source
Two spherical objects with a mass of 5.35 kg each are placed at a distance of 2.35 m apart. How many electrons need to leave each object
A hollow, spherical shell with mass 1.90kg rolls without slipping down a slope angled at 40.0 degree. Part A Find the acceleration. Take the free fall acceleration to be g = 9.80m/s^2 Part B Find the friction force. Take the free fall acceleration to..
A child's top is held in place, upright on a frictionless surface. The axle has a radius of r= 2.21 mm. Two strings are wrapped around the axle, How much angular momentum does the top acquire
King Arthur's knights use a catapult to launch a rock from their vantage point on top of the castle wall, 13m above the moat. The rock is launched at a speed of 27m/s and an angle of 40oC above the horizontal.
A major-league pitcher can throw a baseball in excess of 48.7m/s. If a ball is thrown horizontally at this speed, how much will it drop by time it reaches the catcher who is 15 m away from the point of free.
In the figure below, block 1 of mass m1 slides from rest along a frictionless ramp from height h = 2.30 m and then collides with stationary block 2, which has mass m2 = 2.00m1. What is the value of distance d if the collision is elastic
Starting from rest, a 12 cm diameter compact disk takes 3.0s to reach its operating velocity of 2000 rpm. Assume angular acceleration is constant. How much torque is applied to the disk
The potenial energy for the force between two atoms in a diaomic molcules a-b has he approximate form v(x)= (-a/x^6 )+ (b/x^12), find the frequancy for small vibration
What is the escape speed for an electron initially at rest on the surface of a sphere with a radius of 1.5 cm and a uniformly distributed charge of 4.5 10-15 C? That is, what initial speed must the electron have in order to reach an infinite distance..
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