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A parallel plate capacitor has a voltage of 111V appliedacross its plates, then the voltage source is removed. What is the voltage across its plates if the space between them becomes filledwith mica? ( The dielectric constant for mica is 5.4 and for air is1.0006).
Two charges, -15 and +3.7 µC, are fixed in place and separated by 2.8 m. (a) At what spot along a line through the charges is the net electric field zero? Locate this spot relative to the positive charge. (Hint: The spot does not necessarily lie b..
The 6.5 kg box has acceleration to the left of 3.50 m/s^2. There is an applied force of 50 N acting on the box. Determine the magnitude of the friction acting on the box
A 12.3 µC particle with a mass of 2.53E-5 kg moves perpendicular to a 1.23 T magnetic field in a circular path of radius 25.6 m. How long will it take the particle to complete one orbit
A child with a mass of 57 kg is riding on a merry-go-round. If the child has a speed of 3 m/s and is located 1.4 m from the center of the merry-go-round, what is the child's angular momentum
A diver can change his rotational inertia by drawing his arms and legs close to his body in the tuck position, what was his angular velocity when he left the diving board
A cyclotron for accelerating deutrons (A deuteron has one proton and one neutron ) has a magnetic field of .5 T and a radius of 1 m. What is the energy of the deuteron
A nearest-neighbor pair of Mg2+ ions are separated by a distance of square root 2 a0. Calculate the coulombic force of repulsion between the ions.
Potential inside nonconducting sphere (08c24p11) A nonconducting sphere has a radius R=10 cm and uniformly distributed charge q=5.5e-12 C. Take the electric potential at the sphere's center to be zero. What is V at radial distance r=1.5 cm?
The effectual coefficient of kinetic friction is 0.37. Compute the work done by the man on the piano.
High-speed stroboscopic photographs show that the head of a 260 g golf club is traveling at 54 m/s just 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 44 m/s. Find the speed ..
A vertical solid steel post of diameter d = 21.4cm and length L = 2m is required to support a load of mass m = 7650kg. What is the stress in the post
A Physics instructor, dissatisfied with his salary and looking for a thrill, performs motorcycle stunts in his spare time. where does the rider strike the other side of the cliff
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