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Find an angular speed of a skater.
A 60.0 kg skater begins a spin with the angular speed of 6.00 rad/s. By changing the position of her arms, the skater decreases her moment of inertia by 50%. What is the skater's final angular speed?
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Answer the question posed in Problem again but this, time give a more detailed and less qualitative or more quantitative but concise (itemized) description of the fundamental reasons. Problem:- What is the single most im ...
A radioactive isotope is being produced at a constant rate dN/dt - R in an experiment. a. The isotope has a half-life Show that after a time t >> t1/2, the number of active nuclei will become constant. Find the value of ...
You are an astronomer on planet Neo, which orbits a distant star. It has recently been accepted that Neo is spherical in shape, though no one knows its size. One day, while studying in the library of Town A, you learn th ...
Another example in which the emphasis is not on priors. You visit a family whose three children are all at the local school. You don't know anything about the sexes of the children. While walking clumsily round the home, ...
A spherical mirror has a focal length of 10cm. Locate and describe the image for an object distance of 25cm.
A beam of light at a wavelength of 700 nm with a spectral width of 5 nm and spectral irradiance of 1290 illuminates a area of 10 cm what voltage can this beam generate if converted to electricity?
The position of an object moving along the x axis is given by x(t)=7.0t-3.0t^2 (with t in seconds, and x in meters). A) What is the average velocity during the time interval from t=0.0 s to t=2.0 s? B) What is the instan ...
A driver in a car, originally moving at 12.9 m/s, applies the brakes until the car comes to a stop. The car moves a distance of 34.8 m while braking. How much time did it take for the car to stop? Assume constant acceler ...
Si, GaAs and CdS crystals are exposed to a yellow light of wavelength 5500A and intensity 10 12 photons/cm 2 -sec. Verify that the photon energy Is 2.25eV. How many electron-hole pairs are generated per unit volume per ...
A student on a piano stool rotates freely with an angular speed of 2.91 rev/s. The student holds a 1.45-kg mass in each outstretched arm, 0.791 m from the axis of rotation. The combined moment of inertia of the student a ...
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