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A uniformly charged ball of radius a and charge Q is at the center of a hollow metal shell with inner radius b and outer radius c. The hollow sphere has net charge +4Q.
1) Decide the electric field strength in the region r? a.
2) Determine the electric field strength in the region a<r<b.
3) Determine the electric field strength in the region b? r? c.
4) Decide the electric field strength in the region c<r.
A steel bicycle wheel (without the rubber tire) is rotating freely with an angular speed of 16.4 rad/s. What is the angular speed of the wheel
A resistor is in the shape of a cube, with each side of resistance R . Find the equivalent resistance between any two of its adjacent corners.
A 0.380 kg steel ball makes an elastichead-on collision with a second ball initially at rest. What is the mass of the second ball
A 2.5-kg cart is rolling along a frictionless, horizontaltrack towards a 1.5-kg cart that is held initially at rest. Thecarts are loaded with strong magnets that cause them to attract oneanother. Thus, the speed of each cart increases.
An object moving with uniform acceleration has a velocity of 14.0 cm/s in the positive x-direction when its x-coordinate is 3.18 cm. If its x-coordinate 2.95 s later is ?5.00 cm, what is its acceleration?
A 55-kg hiker starts at an elevation of 1600 m and climbs to the top of a 3100-m peak. What is the hikers change in potential energy
Protons can escape from the surface of the sun if their kinetic energy is sufficient to overcome the gravitational potential energy. a) Calculate the minimum speed necessary for escape
A 4.0-m-long iron bar of uniform cross section is held perpendicular to the wall by a wire from the end of the bar to the wall. what is the magnitude of the horizontal component of force produced by the wall
A 9 kg mass slides to the right on a surface having a coefficient of friction 0.37 as shown in the figure. The mass has a speed of 5 m/s when contact is made with a spring (of con- stant 107 N/m)
An electric car accelerates for 8.0 s by drawing energy from its 305-V battery pack. Find the minimum horsepower rating of the car
A light platform is suspended from the ceiling by a spring. A student with a mass of 74 kg climbs onto the platform. At what time does the maximum speed occur
The balls have a glancing collision, not a head-on collision, deflecting the second ball by 90° and sending it north at 1.51 m/s. Illustrate what are the speed and direction of the first ball after the collision?
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