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Question: Imagine that it is the positive charges, not the negative charges, that are free to move. In that case, re-write the explanation of the behavior of an electroscope when sealing wax is brought near. Include a sketch similar to Fig.
Fig. - Negative charge on wax rod induces negative charge on electroscope leaves. As the rod is withdrawn, the charges redistribute themselves, and the leaves of foil collapse.
A pendulum of period 2s is released from rest at an inclination of 5 degrees to the (downward) vertical. Find it's subsequent angular position as a function of time
Assume that you exhale the air at your body's temperature of 37 oC with relative humidity of 80%. Will you see your breath
Two 1.90-cm-diameter disks spaced 2.10mmapart form a parallel-plate capacitor. The electric field between the disks is 5.10×105V/m, What was the electron's speed as it left the negative plate
An inductor has an inductance of 0.074 H. The voltage across this inductor is 30 V and has a frequency of 850 Hz
A sample of 3.0 grams of an ideal gas at 127°C and 1.0 atmosphere pressure has a volume of 1.5 liters. Which of the following expressions is correct for the molar mass of the gas? The ideal gas constant, R, is 0.08 (L-atm) / (mole K).
a proton moving with a velocity of 3.0104ms enters a magnetic field of 0.30t.if an angle between the velocity of the
questionassume that a climber having mass m and who are l tall rappels down a vertical cliff with her body rose at a 43
Consider a capacitor created when two identical conducting plates are placed parallel and close to each in other in vacuum, what is the magnitude of the electrostatic force between the charged plates, Is the force attractive or repulsive
An object with an average density of 920 kg/m3 floats in a pan containing 500 cm3 of water. Find what volume of ethanol has been added
two point charges have a total charge of 555 microc. when placed 1.30 m apart the force each exerts on the other is
A large 50-turn circular loop of radius 10cm carries a current 4A. At the center of the loop is a small 20-turn coil of radius 0.5cm carrying current 1A. Find the torque exerted by the large coil on the small coil
A periscope for a submarine uses two totally reflection 45°-45°-90° prisms with total internal reflection on the side adjacent to the 45° angles. It springs a leak, and the bottom prism is covered with water. Explain why the periscope no long works. ..
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