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A student sits on a swivel seat. Initially the student is at rest,holding a spinning bicycle wheel that has an angular velocity of14.2 rad/s (see figure below). The studentturns the spinning wheel upside down, reversing the direction ofits angular velocity. This causes the student to begin to rotate. Find the student's final angular velocity. The moments of inertiaof the wheel and of the student are 0.314kg · m2 and 2.90 kg· m2 respectively.
In a certain region of space, the electric potential is given by V= 6y. The potential V is given in volts, the coodinate y is given in meters. Find the direction of the electric field
A 2g marble is fired vertically upward using a springgun. what is the spring constant
A very long solenoid with a circular cross section and radius r= 8.10 cm with n= 1.50E 4 turns/m has a magnetic energy density uB= 6.40 mJ/m3. What is the total energy stored in the solenoid
what is the minimum work by the force p to move the 8-kg block to the top of the incline of uk0.4? compare this with
questiona 67.0 kg person holds out his arms so that his hands are 1.70 m apart. normally a persons hand makes up about
question1an average human body might be considered to have a black surface of area 10m2 and surface temperature is
A standing wave is set up in a 200-cm string fixed at both ends. The string vibrates in 5 distinct segments when driven by a 120-Hz source. What is the fundamental frequency for the string
A certain car battery with a 14.0 V emf has an initial charge of 195 A•h. Assuming that the potential across the terminals stays constant until the battery is completely discharged, for how long in hours can it deliver energy at the rate of 184 W.
an 8000 kg truck traveling with a velocity of 20.0m/s in a direction 30 (degree) south of east, find the direction of the combined mass
q1. laser light at 635nm falls on a double-slit apparatus with slit separation 6.910-6m. find out the separation
A 150 MW laser pulse is focused with a lens to a diameter of 1.39 %u03BCm. What is the laser beam's electric field amplitude at the focal point
A cockroach crawls with a constant speed on a phonograph turntable that is rotating with angular velocity ?. If the bug moves at constant speed away from the center of the turntable draw all forces acting on the bug (in the bug's frame).(b) Now sa..
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