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Figure 21-25 shows four identical conducting spheres that are actually well separated from one another. Sphere W (with an initial charge of zero) is touched to sphere A and then they are separated. Next, sphere W is touched to sphere B (with an initial charge of -32e) and then they are separated. Finally, sphere W is touched to sphere C (with an initial charge of + 48e), and then they are separated. The final charge on sphere W is +18e.What was the initial charge on sphere A?
a bucket of mass 2 kg is whirled in vertical circle of radius 1.10m. at the lowest point of its motion the tension in the rope supporting the bucket 25 N, find the speed of the bucket
An object whose rotational inertia is 100 kgm2 is subjected to a torque of 20 Nm. During this time, what is its rotational displacement
Two ice skaters, with masses of 50.0kg and 65.0kg , are at the center of a 40.0m -diameter circular rink. how long does the lighter skater take to reach the edge
A balloon is charged with static electricity until it has a voltage of V = 1300 V. A student reaches out and is shocked by a spark. The electric force does W = 1 x 10-7 J of work transferring the charge. Input an expression for the magnitude of cha..
Four point charges are at the corners of a square of side a as shown in the figure below. Determine the magnitude and direction of the resultant electric force on q
It is known that the electric force between two objects is muchstronger in magnitude than the attractive gravitational force. Twoparticles of masses 6.01 kg and 1.81 kg and charges 8.82 μC and-1.53 μC respectively are separated by a distance 10.6 ..
A person pushes a 16.0-kg shopping cart at a constant velocity of a distance of 26.0 m. She pushes in a direction 20.0degrees below the horizontal. A 54.0 N frictional force opposes the motion of the cart.
A high power cell phone tower radiates microwave power at a level of P=50W. Calculate the Intensity (in units of W/m2) on the surface of a sphere of radius 100m. (The radiation is not isotropic, but the gain factor makes up for this)
A wave with a frequency of 1200 Hz propagates along a wire that is under a tension of 800 N. What will be the wavelength if the tension is decreased to 600 N and the frequency is kept constant
The rim of .1 wheelchair is rotating at a rate of 65 revolutions per minute. If the radius of the rim is 33.0 cm. what is the rim's rotational velocity in radians per second and what is its linear velocity at the rim?
A 2kg mass attached to a spring undergces simple hamonic motion with an aamplitude of 0.1 m. Deteminethe total energy of this mass spring system
A grasshopper makes four jumps. The displacement vectors are (1) 25 cm, due west; (2) 23.5 cm, 50° south of west; (3) 24.5 cm, 56° south of east; and (4) 36 cm, 43° north of east. Find the magnitude and direction of the resultant displacement. Expres..
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