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Two 4.0 cm -diameter disks face each other, 1.5 mm apart. They are charged to +/- 13 nC. 1) What is the electric field strength between the disks? 2)A proton is shot from the negative disk toward the positive disk. What launch speed must the proton have to just barely reach the positive disk?
Calculate the vertical component of its velocity by the time it hits the ground
A 10 m beam of mass 330 kg extends over a ledge. The beam is not attached, but simply rests on surface. A 53 kg student intends to position the beam so that he can walk to the end of it. How far from the edge of the ledge can the beam extend.
(a) How much charge can be placed on a capacitor with air between the plates before it breaks down if the area of each plate is 6.00 cm2? (b) Find the maximum charge if bakelite is used between the plates instead of air.
A 16 g rifle bullet traveling 180 m/s buries itself in a 3.5kg pendulum hanging on a 2.7 m long string, which makes the pendulum swing upward in an arc. find the horizontal component of the pendulum's maximum displacement.
An airplane is flying through a thundercloud at a height of 2400 m. (Flying at this height is very dangerous because of updrafts, turbulence, and the possibility of electric discharge.)
A 65.0 kg human sprinter can accelerate from rest to 10 m/s in 2.90 s. all through the same interval, a 33 kg greyhound can accelerate from rest to 20 m/s. calculate (a) change in kinetic energy and (b) average power output for each.
A 62.00kg student is standing atop a spring in an elevator that is accelerating upward at 3.8 m/s2. The spring constant is 2600-N/m. By how much is the spring compressed.
An object-spring system oscillates with amplitude of 3.00cm. If the spring constant is 205 N/m and object has a mass of 0.50 kg, determine each of the following values.
What will be the vertical position of the boat. In the frame of reference of the truck, at what angle to the vertical does the boy throw can.
determine the torque about the axis immediately after the bug lands on sphere.
What is the angle. The velocity of a particle moving in the xy plane is given by = (5.5t - 4.5t2)i + 8.3j
What should be the least kinetic energy in electron volts
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