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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.
A team of scientists have arrived at the Galactic Center Black hole(mass of 7.95e36 kg). Having parked their spaceship in orbit at a safe distance around the back hole, what range of angles are needed to optimize the radio
If the surface area of a human is 1.7 m^2 and each square inch of skin contains 75 pressure sensors
A boeing 747 jet with a wingspan of 60.0 m is flying horizontally at a speed of 300 m/s over Phoenix, What voltage is generated between the wingtips
A tungsten target is struck by electrons that have been accelerated from rest through a 76.1-kV potential difference. Find the shortest wavelength of the radiation emitted
An observation satellite orbits the planet at a height of 1000. What is the projectile's speed as it passes the satellite
A ray of light is traveling in a glass cube that is totally immersed in water. What is the refractive index of the glass
a bicyclist of mass 54 kg puts all his weight on each downward-moving pedal as he pedals up a steep road. determine the magnitude of the maximum torque he exterts in the process
Use the Fourier series method to evaluate the deviation of the bone subjected to the load, w, which is linearly dependent on its position
A solar cell generates a potential difference of 0.0984 V when a 500 ? resistor is connected across it, What is the internal resistance of the solar cell
A window washer is standing on a scaffold supported by a vertical rope at each end. The scaffold weighs 192 N and is 3.1 m long. What is the tension in each rope
The force exerted to a robot arm from a motor is given as a function of position F = 1.50 + 20.0 x2 (N), How much work is done by the motor when the position of the arm is moved from x = 0.200 m to x = 0.750 m
Two closely wound circular coils have the same number of turns, How are the self-inductances of the two coils related
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