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Determine the design angle f ∅(0° ? ∅ ?90°) between struts AB and AC so that the 400-lb horizontal force has a component of 600 lb which acts up to the left, in the same direction as from B towards A. Take ∅30°
a uniformly charged sphere which carries a total charge q radius r is rotating along z axis with an angular speed ?.
You need to push a box across the room. which side of the box should be the side down on the floor
My professor today stated that if a ball was to fall a certain height, then the work done by gravity on the ball would equal the work done by the ball's equal and opposite gravitational pull. By W=F*d, this means that the earth must travel the ..
Two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface. Based on this measurement, what is the work function for this metal
A player kicks a soccer ball towards the goalkeeper, but at an angle of 37 degree to the horizontal and with an initial speed of 14.7m/s The goalkeeper stands 26 m from the kicker. Where will the ball land relative to the goalkeeper?
High-speed stroboscopic photographs show that the head of a 230 g golf club is traveling at 40 m/s now before it strikes a 46 g golf ball at rest on a tee. After the collision, the club head travels (in the same direction) at 30 m/s. discover the spe..
A train sounds its horn as it approaches an intersection. The horn can just be heard at a level of 52 dB by an observer 10 kilometer away. Obtain the average power generated by the horn
An object is located 55 centimeter from a concave mirror of focal length 96 centimeter. The object is 6.7 centimeter tall. Evaluate how tall is the image
A straight wire, 0.5 m long, is moved straight up at a speed of 20 m/s during a 0.4-T magnetic field pointed in the horizontal direction. What EMF is induced in the wire?
A 5.0 µC point charge is placed in an external uniform electric field of 2.00 104 N/C. At what distance from the charge is the net electric field zero
Translate the following mathematical statements to the corresponding forms n wave mechanics: i) = δnm, and ii) = ( )*, where A is an hermitian operator.
A large parallel plate capacitor has plate separation of 0.98 cm and plate area of 230 cm2. How much work is done on the capacitor as the plate separation is increased to 1.96 cm
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