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A student sitting on a frictionless rotating stool has rotational inertia 0.90 kg*m^2 about a vertical axis through her center of mass when her arms are tight to her chest. The stool rotates at 6.80 rad/s and has negligible mass. The student extends her arms until her hand Part A Ignoring her arm mass, what's her new rotational velocity? Express your answer to two significant figures and include the appropriate units. s, each holding a 5.0 kg mass, are 0.79 m from the rotation axis. Part B Repeat if each arm is modeled as a 0.79 long uniform rod of mass of 4.8 and her total body mass is 60 . Express your answer to two significant figures and include the appropriate units.
Assume it takes 8.00 min to fill a 25.0-gal gasoline tank. (1 U.S. gal = 231 in.3) (a) Calculate the rate at which the tank is filled in gallons per second. (Please provide numerical answer in gal/s)
If you are given a velocity versus time graph, and v initial is given, how do you calculate instantaneous acceleration
A shell is fired at an angle of 30 to the horizontal with velocity of 196 m/s. Find the total time of flight, horintol range and maximum height attained
A 4.5kg ball with a velocity of 4.0m/s in the+x-direction collides head-on elastically with a stationary 1.8kg ball. What is the speed of the first ball after the collision
A Higgs Boson particle can be created by colliding protons and anti-protons, each with a mass of m. If the Higgs Boson has a mass of 100m, how much energy must be put into the proton-antiproton system to create the Higgs Boson particle if a) moving p..
A 126.6 {\rm N} carton is pulled up a frictionless baggage ramp inclined at 33.0^\circ above the horizontal by a rope exerting a 75.4 {\rm N} pull parallel to the ramp's surface. Calculate the work done on the carton by the rope
While a roofer is working on a roof that slants at 42.0 degrees above the horizontal, If it starts 4.35 m from the lower edge of the roof, how fast will the toolbox be moving just as it reaches the edge of the roof if the kinetic friction force on ..
q1. a diatomic gas molecule has a mass of 2.01 x 10-26 kg and a rotational inertia of 3.37 x 10-46 kgbullm2 about an
A parallel-plate air capacitor is made from two plates 0.070 square, spaced 9.3 apart. What must the potential difference between plates be to produce an energy density of.
You plan to project an inverted image 30.0 cm to the right of an object. You have a diverging lens with focal length -4.00 cm located 5.40 cm to the right of the object. What is the focal length of the second lens
An elevator moves downward in a tall building at a constant speed of 4.35 m/s. Estimate the highest floor from which the bolt can fall
A car moving at 37 m/s approaches a stationary whistle that emits 270 Hz sound. The speed of sound is 347 m/s. What is the frequency of sound heard by the driver of the car.
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