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The crank OA rotates in the vertical plane with a constant clockwise angular velocity ?o of 4.5 rad/s. For the position where OA is horizontal, calculate the force under the light roller B of the 10-kg slender bar AB
q1. a 260 wooden raft floats on a lake. when an 80 man stands on the raft it sinks 5.0 deeper into the water. when he
The electromagnetic wave that delivers a cellular phone call to a car has a magnetic field with an rms value of 1.6 x 10-10 T. How much energy does this wave carry through the window
A magnetar (magnetic neutron star) has a magnetic field near its surface of magnitude 3.75·1010 T. Calculate the energy density of this magnetic field
Three point charges are each located a distance a from the origin, as shown. At (x,y) = (a,0) is a charge q, at (x,y) = (-a,0) there is also a charge q. At (x,y) = (0,a) there is a charge q. Let a = 0.5 m and q = 3x10-9 C. Each charged particle ha..
Torque on a Merry-Go-Round. Calculate the torque required to produce the acceleration, neglecting frictional torque. What force is required?
if the torque required to loosen a nut that is holding a flat tire in place on a car has a magnitude of 43.0 nmiddotm
An LC circuit has zero resistance, no battery, a capacitor C=70microFarads, and an inductor L=0.4H connected in a simple loop. The capacitor and inductor store a compined total energy of U=28microJoules.
A grinding wheel of radius 0.280 m rotating on a frictionless axle is brought to rest by applying a constant friction force tangential to its rim. Find the magnitude of the friction force
A circular loop of radius r = 4, is located in the xy plane, centered at the origin. Find the net flux leaving a closed sphere of radius r = 2, centered at the point (4, 0, 0)
The mean distance between earth and the sun is 1.50 x 10^11 m. The average intensity of solar radiation incident on the upper atmosphere of the earth is 1390 W/m^2. determine the total power radiated by the sun
A runner of mass m = 37 kg and running at 2.8 m/s runs asshown and jumps on the rim of a playground merry-go-round which hasa moment of inertia of 383 kg·m2, what is its final angular velocity
A refrigerator does 135.0 J of work to remove 540.0 J of heat from its cold compartement. How much heat per cycle is exhausted to the kitchen
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