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An initially neutral conductor contains a hollow cavity in which there is a -100 nC point charge. A charged rod transfer -40 nC to the conductor. Afterward, what is the charge
(a) on the inner wall of the cavity wall;
(b) on the external surface of the conductor?
A stunt man (69.3 kg) swings across a valley at the end of a 28.2 m long rope. Find the tension in the rope at the bottom of the swing
A 1-megabit computer memory chip contains many 60.0 fF capacitors. Each capacitor has a plate area of 21.0x10-12 m2. Express the plate separation in nanometers
Assume that it takes 2.30 kg of oxygen to burn 1.00 kg of coal. (The actual amount varies with the type of the coal). What is the total mass of the reagents used in the combustion all through the 30 days.
Two charges of +0.250 C are placed at the points (1.25 mm, 0) and (-1.25 mm, 0). A third charge of -0.450 C is placed at the origin. a. What is the electric field at the point (0, 2.20 mm)? b. At what point on the y-axis will E be zero? Show graph..
Air that occupies 0.19 cubic meters at 1.03e+05 Pa gauge pressure is expanded isothermally to atmospheric pressure, Compute the work done by the air
A butterfly at eye level is 26 cm in front of a plane mirror. You are behind the butterfly, 48 cm from the mirror. What is the distance between your eye and the image of butterfly in the mirror.
At 273 K and 1.00 x 10^-2 atm, the density of a gas is 1.24 x 10^-5 g/cm3. Find the Molar Mass of the gas
Your eye (diameter 2.5 cm) is able to focus the image of a tree on your retina. find the size of the image of the tree on your retina
What is the frequency of blue light that has a wavelength of 450 nm and What is the frequency of red light that has a wavelength of 650 nm
A tiger leaps horizontally from a 5.90 m high rock with a speed of 4.10 m/s. How far from the base of the rock will she land.
A camera is equipped with a lens with a focal length of 23 cm. how far from the film should the lens be placed
A 15 kg box is being pushed across the floor at 1.7 m/s to the right. When the pushing force is removed, find the frictional force exerted on the box by the floor
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