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A 30 kg child is sitting on the outer edge of a 100 kg carousel with a radius of 2.0 m. (The carousel can be modeled as a disk and assume it rotates without friction on its axis, the child can be modeled as a point mass) The carousel is initially at rest.
a) What is the moment of inertia of the carousel and child?
b) The child pushes against the ground with a force of 25 N to get the carousel moving. What is the resulting torque?
c) What is the resulting angular acceleration of the carousel and child?
d) What is the kinetic energy of the child and carousel after 10 s?
If a compressive force of 3.2×104N is exerted on the end of a 18cm long bone of cross-sectional area 4.3cm2 , will the bone break, By how much does it shorten
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A symmetric double convex lens with a focal length of 25.0cm is to be made from glass with an index of refraction of 1.53. What should be the radius of curvature for each surface
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Avoiding air resistance, what is the magnitude of the total velocity of the package at the moment it is thrown as seen by an observer on the ground? Answer in units of m/s.
fired horizontally at a speed of 550, goes completely through the block, emerging at a speed of 180 . Illustrate what is the speed of the block immediately after the bullet exits?
Certain stars at the end of their lives are thought to collapse combining their protons and electrons together to form a neutron star. Such a star could be thought of as a giant atomic nucleus.
find the velocity and position of the particle asthe moment it reaches it's maximum x coordinate.
A plane wave of wavelength 580 nm is incident on a slit with a width of a = 0.50 mm. A thin converging lens of focal length +80 cm is placed between the slit, How far is the screen from the lens
Assume that light of wavelength 550 nm is being observed. Also suppose that diffraction effects, rather than atmospheric turbulence, limit the resolving power of the telescope. Find the greatest distance that these stars might be from the earth.
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