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The drawing shows three objects. They are connected bystrings that pass over massless and friciton-free pulleys. Theobjects move, and the coefficent of kinetic friction between themiddle object and the suface of the table is 0.1000
a- what is the acceleration of the 3 objects?
b- find the tension in each of the two strings?
It is desired to project an image of an object four times actual size with a lens of focal length 20 cm. What object distance should be used
three forces when added produce a resultant force that is 100N pointing 63° above the positive x-axis. what are the magnitude and direction of the third force
A 12 g bullet travelling at 420 m/s is fired into the middle of an unlatched 32.0 kg door. The door is hinged on one end, is 1.20m wide and has I = 1/3 Md^2. What is the angular speed of the door just after the bullet is embedded in it
A bullet moving horizontally with a speed of 500 m/s strikes a sandbag and penetrates a distance of 10 cm. What is the average acceleration of the bullet while it is in the sand bag
Two circular current loops are located at z = +R/2 and z = ?R/2, parallel to the xy-plane and centered at the z-axis. Derive a formula for the magnetic field at an arbitrary point on the z-axis. Note by symmetry that B(x) = Bz(z) k
A -10.0 nC point charge and a +20.0 nC point charge are 15.0 cm apart on the x-axis. What is the direction of the electric field at the point on the x-axis, between the charges, where the electric potential is zero
A parallel-plate capacitor has plates of area 0.2 m2separated by a distance of 0.003 m. What is the strength of theelectric field between these plates when this capacitor isconnected to a 5-V battery?
Three parallel wires are parallel to the y-axis, and all are at z=0. The first is glued to the table top at x=0 and carries a current of 3 amps in the positive y direction. What is the initial acceleration(magnitude and direction) of the second wir..
A charge +q is at the origin. A charge -2q is at x = 9.10 m on the +x axis. (a) For what finite value of x is the electric field zero? (b) For what finite values of x is the electric potential zero? (Note: Assume a reference level of potential V =..
Explain why the theorem of relativity predicts that no massive particle can be accelerated unto or beyond the speed of light (hint: recall the work-energy theorem)
A second baseman tosses the ball to the first baseman, who catches it at the same level from which it was thrown, What is the horizontal component of the ball's velocity just before it is caught
Gas is contained in an 6.5 L vessel at a temperature of 20°C and a pressure of 7.4 atm. Determine the number of moles of gas in the vessel
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