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A pitcher throws a curveball that reaches the catcher in0.55 s. The ball curves because it isspinning at an average angular velocity of 360 rev/min (assumed constant) on its way to thecatcher's mitt. What is the angular displacement of the baseball(in radians) as it travels from the pitcher to the catcher?
For no apparent reason, a poodle is running at a constant speed of 4.40 {rm m/s} in a circle with radius 3.0 {rm m}. Let vec v_1 be the velocity vector at time t_1, and let vec v_2 be the velocity vector at time t_2.
A radar for tracking aircraft broadcasts a 12.0GHzmicrowave beam from a 2.00m -diameter circular radar antenna, What is the diameter of the radar beam at a distance of 30.0km
In exercising, a weight lifter loses 0.123 kg of water through evaporation, the heat required to evaporate the water coming from the weight lifter's body. find the change in the internal energy of the weight lifter
A block of mass 4.0 kg is attached to a string and the string is attached to a spring(k=32.0N/m). What is the maximum extension of the spring
Assuming a constant pressure gradient, if blood flow is reduced by 74%, by what factor is a blood vessel decreased in radius
A spherical balloon expands when it is taken from the coldoutdoors to the inside of a warm house If its surface areaincreases 16.0% by what percentage does the radius of the balloon change
A 50 foot garden hose isfilled with sea water. What is the resistance from one end to the other, what is the current density in the hose
At time a grinding wheel has an angular velocity of 22. It has a constant angular acceleration of 28.0 until a circuit breaker trips at time = 1.60 . From then on, the wheel turns by an angle of 438 as it coasts to a stop at constant angular decel..
As a woman walks, her entire weight is momentarily placed on one heel of her high-heeled shoes. Calculate the pressure exerted on the floor by the heel
A piñata of mass 3.30 kg is attached to a string tied to a hook in the ceiling. What is the work done by gravity by the time the string is in a vertical position for the first time
What is the rms current in an RL circuit when a 60.0Hz 240V rms ac voltage is applied, where R= 1.70kohm, and L= 450mH. Here I got 0.14A which is the correct answere
You are riding in an elevator on the way to the eighteenthfloor of your dormitory. The elevator is accelerating upwardwith a = 1.90 m/s2. what magnitudeof force must you apply
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