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A volley ball is spiked so that it has an initial velocity of 17 m/s directed downward at an angle of 65° below the horizontal. What is the horizontal component of the ball's velocity when the opposing player fields the ball?
The coefficient of static friction is .8 between the soles ofa sprinters shoes and the level track surface she's running on. Determine the maximum acceleration she can achieve
A neutral conductor contains a hollow cavity in which there is a +100 nC point charge. what is the charge on the exterior surface of the conductor
q1. a ferris wheel is a vertical circular amusement ride with radius 6 m. riders sit on seats that swivel to remain
Several ice cubes (pi = 0.9167 g/cm3) of total volume Vi = 240 cm3, Calculate the amount of heat energy Qm in J needed to melt the ice cubes (Lf = 334 kJ/kg)
Canadian nuclear reactors use heavy watermoderators in which elastic collisions occur between the neutrons and deuterons of mass2.0 u. What is the speed of a neutron, expressed as a fraction of its original speed, after a head-on
A hydrogen atom, initially at rest, emits an ultraviolet photon with a wavelength of \lambda = 122nm. What is the recoil speed of the atom after emitting the photon
The equation connectin s,p, and f for a simple lens can be employed for spherical mirrors, too. A concave mirror with a focal length of 8cm forms an image of a small object placed 10cm in front of the mirror. Where will this image be located?
A fireman d = 59.0 m away from a burning building directs a stream of water from a ground- level fire hose at an angle of ?i = 29.0° above the horizontal, at what speed will the water strike the building
Use the work-energy theorem to solve each of these problems. Youcan use Newton's laws to check your answers. Neglect air resistancein all cases. A branch falls from the top of a96.0-m-tall redwood tree, startingfrom rest. How fast is it moving when ..
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..
You have a pulley 13.8 cm in diameter and with a mass of 2.1 kg. You get to wondering whether the pulley is uniform. What is the moment of inertia if the pulley is uniform
A charge of +286 mC is fixed at the center of a square that is 0.88 meter on a side. Obtain how much work is done by the electric force
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