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During a tennis serve, a racket is given an angularacceleration of magnitude 160 rad/s2. At thetop of the serve, the racket has an angular speed of 14 rad/s. Ifthe distance between the top of the racket and the shoulder is1.5m, find the magnitude of the total acceleration of the top of the racket.
q1. a box of mass 32 kg is at rest on a horizontal frictionless surface. a constant horizontal force then acts on the
A block of weight w = 20.0N sits on a frictionless inclined plane, which makes an angle theta = 30.0^\circ with respect to the horizontal, as shown in the figure. (Figure 1) A force of magnitude F = 10.0N , applied parallel to the incline, is just..
A skier wears a jacket filled with goose down that is 15 mm thick. Another skier wears a wool sweater that is 7.00 mm thick. Both have same surface area.
Typical field strengths are a few femoteslas (1fT=10^-15T). An adult brain is about 140mm wide, A reasonable magnetic field is 4.35fT at the sensor. According to this model, what is the current in the brain?
A playground carousel is rotating counterclockwise about its center on frictionless bearings. Find the final angular speed of the carousel
A wire is formed into a circle having a diameter of 11.2 cm and is placed in a uniform magnetic field of 3.22 mT. Find the maximum torque on the wire
A spring is first stretched 2.0 cm from its unstressed length. It is then stretched an additional 1.7 cm.How does the work required for the second stretch compare to the work required for the first stretch (give a ratio of second to first)?
In order to determine the mass of a molecule, first an electron is removed from the molecule. find the magnitude of the centripetal force exerted on the ion
A computer hard drive typically operates with a rotation speed of 7200 rpm (revolutions per minute).What is the angular acceleration of the drive
An airplane travels at speed of 125 m/s in calm air. The plane wants to undergo a change of displacement delta x= 183 km i. How lond will it take the plane to reach its destination
A person sitting quietly in a room on a winter day may lose heat primarily by radiation from the outer surface of her clothes to the walls of the room. find the temperature of the outer surface of the clothes
Determine the location of the center of mass of the molecule as measured from the hydrogen atom (Chlorine is 35 times more massive than hydrogen.).
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