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A 35-kg child is holding for dear life on a playground merry-go-round that has a radius of 2.5m and is turning at a rate of one turn every 5 seconds.
a) What's is the child's acceleration relative to the ground?
b) What is the magnitude of the force acting on the child through the child's arms?
c) What is the child's acceleration relative to the place on the merry-go-round where the childs is standing?
d) If you were to naively apply Newton's second law to this situation, what is the magnitude of the apparent centrifugal force acting on the child?
a popular method of distributing music used to be on disks that had a radius of about 0.3m and spun at a constant angular velocity of about pi radians per second. Find the tangential velocity at the inner and outer edges
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Calculate the de Broglie wavelength ? of an electron with energy EF in sodium, and compare the value with the atomic separation R in sodium
A person's prescription for her new bifocal glasses calls for a refractive power of -0.461 diopters in the distance-vision part, and a power of +1.83 diopters in the close-vision part. Find the near and far points of this person's uncorrected visi..
A device known as Atwood\'s machine consists of two masses hanging from the ends of a vertical rope that passes over a pulley, calculate the magnitude of their acceleration, a, and the tension in the rope, T
The polarizability of large atoms can be estimated by using the formula for the polarizability of a metal sphere, \(\alpha = 4\pi\epsilon a^{3}\), Estimate the induced dipole moment of an oxygen atom
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Two protons are moving directly toward one another. When they are very far apart, their initial speeds are 2.10 x 105 m/s. What is the distance of closest approach?
Two blocks are connected by a cord passing over a small (frictionless) pulley as shown below. The angle ? = 30 degrees, what is the mass, M, of the large block
When two identical ions are separated by a distance of 8.6×10?10 m, How many electrons are missing from each ion
Wile E. Coyote and the Roadrunner are fictional cartoon characters. The premise of the cartoon is that Wile E. What is the magnitude of the impulse on the second wagon
Consider a balloon filled with helium gas at room temperature (T = 289 K) and atmospheric pressure. Calculate the average de Broglie wavelength of the helium atoms
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