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A circular-motion addict of mass 85 kg rides a Ferris wheel around in a vertical circle of radius 10 m at a constant speed of 6.0 m/s. (a) What is the period of the motion? (b) What is the magnitude of the normal force on the addict from the seat when both go through the highest point of the circular path? (c) What is it when both go through the lowest point?
A student is reading a lecture written on a blackboard. The lenses in her eyes have a refractive power of 54.35 diopters, what is the height of the image on her retina
the illumination of an object by a light source is directly proportional to the strength of the source and inversely
A student is reading a lecture written on a blackboard. The lenses in her eyes have a refractive power of 56.11 diopters, and the lens-to-retina distance is 1.791 cm. (a) How far is the blackboard from her eyes? (b) If the writing on the blackboard i..
The eyepiece of a compound microscope has a focal length of 3.10 cm, and the objective lens has f = 0.730 cm. Calculate the total magnification
define How fast are the waves moving.
Two sinusoidal waves of the same period, with amplitudes of 5.5 and 7.5 mm, travel in the same direction along a stretched string; What is the phase constant of the other wave
an 9.0-kg object moving 5.0 ms in the positive x direction has a one-dimensional collision with a 3.0-kg object moving
A 480 g ball swings in a vertical circle at the end of a 1.9 m-long string. What is the speed of the ball at that point
A wedge of mass m=36.1 kg is located on a plane that is inclined by an angle ?=21.3 degrees with respect to the horizontal. A force F=302.3 N in the horizontal direction pushes on the wedge. The coefficient of kinetic friction between the wedge and t..
A worker in a radiation lab recieves a whole-body radiation dose of 29 mrad. Her mass is 65 kg. The radiation delivered by alpha particles for which the RBE is 12. What was the total energy absorbed by her body
you are on a mysterious planet and notice that a 4.8 m long simple pendulum has a period of 2.6 s. determine the
you suspect that an unknown is acetanilide mp 113.5-114oc. give a qualitative estimation of the melting point when the
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