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Q. Two 10-cm-diameter charged disks face each other, 20 cm apart. Both disks are charged to -50nC.
What is the electric ?eld strength at
(a) The midpoint between the two disks?(b) The centre of the left disk
Q. A block of mass 6.2 kg is pulled along a horizontal frictionless floor by a cord that exerts a force of 42.0 N at an angle 22.4° above the horizontal. What is the magnitude of the acceleration of the block?
A pencil (mass 5.8g and length 8.3cm) is at first balanced so that it is sitting vertically on a flat table. If the pencil then falls, find its angular velocity just before it strikes the tabletop. Assume that the mass of the pencil is distributed un..
A truck travels beneath an airplane that is moving 190 km/h at an angle of 26? to the ground.
By how much does the ball clear the net. How far below top surface would the medallion appear if the observer (not wearing goggles) and the block were under water.
How fast should a meterstick travel to you in the direction parallel to the stick so that its length as measured by you is 70 cm.
what is work done on package by friction.
What is the magnitude of the normal force that each brake pad applies to the rim . find the length of the meterstick as measured in frame S1 according to classical physics. Reply in units of m.
Ricardo and Jane are standing under a tree in the middle of a pasture. An argument ensues, and they walk away in different directions. Ricardo walks 24.0 in a direction 60.0 west of north. Jane walks 12.0 in a direction 20.0 south of west. They then ..
A 100-kg halfback running north with a speed of 12 m/s is tackled by a 110-kg opponent running south with a speed of 4.0 m/s. If collision is completely inelastic and head-on, compute the speed of the players just after the tackle.
A sound wave traveling at 341 m/s is emittedby foghorn of a tugboat. An echo is heard2.40 s later.How far away is the reflecting object? reply in units of m.
find the tension in the wire.Find the maximum height above the ground reached by the package.
A 10.60 weather rocket generates a thrust of 220. The rocket, pointing upward, is clamped to the top of the vertical spring. The bottom of the spring, whose spring constant is 450, is anchored to the ground.
At the instant the alpha particle leaves the nucleus, the centers of the two are 7.5 apart and essentially at rest. Find their speeds while they're a great distance apart. Treat each particle as a spherical charge distribution.
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