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Consider the Earth and a cloud layer 900 m above the planet to be the plates of a parallel-plate capacitor. what is the maximum charge the cloud can hold
A moving particle encounters an external electric field that decreases its kinetic energy from 9910 eV to 6840 eV as the particle moves from position A to position B. Determine the charge of the par
An electron is released from rest at the negative plate of a parallel plate capacitor. How fast is the electron moving just before it reaches the positive plate
An open container holds ice of mass 0.530 kg at a temperature of -15.7 Celsius . The mass of the container can be ignored. How much time passes before the ice starts to melt
An arrow is launched vertically upward from a crossbow at 97.9 m/s. What is its average speed up to that moment
You are assigned the design of a cylindrical, pressurized water tank for a future colony on Mars, Find the net downward force on the tank's flat bottom
The power required by an ice maker is 225 W and is the rate at which it does work. determine the maximum amount of ice the unit can produce in one day
A bullet is fired through a board 13.5 cm thick, with a line of motion perpendicular to the face of the board. what is its acceleration as it passes through the board
An object with a charge of 0.880 µC is placed at the center of a regular icosahedron with 20 equivalent surfaces. find the electric flux through one surface of the icosahedron
A 1128 kg car and a 2210 kg pickup truck approach a curve on the expressway that has a radius of 272 m. find the normal force on the truck to the highway surface
A total of 2.99·106 electrons are placed on an initially uncharged wire of length 2.25 m. What is the magnitude of the acceleration of a proton placed at that point in space
an initially uncharged electroscope is polarized by bringing a negatively charged rubber rod near the bulb, how many electrons are on the leaf end
An electron moves in the positive x-direction a distance of 2.31 m in 2.85·10-8 s, bounces off a moving proton, What is the average speed of the electron
A wheel with radius 43.9 cm rotates 4.27 times every second. What is the tangential speed of a wad of chewing gum stuck to the rim of the wheel
The height of a helicopter above the ground is given by h = 3.15t3, How long after its release does the mailbag reach the ground
An object moves with constant acceleration 3.55 m/s2 and over a time interval reaches a final velocity of 12.8 m/s. What is the distance it travels during this interval
A prospector finds a solid rock composed of granite (? = 2650 kg/m3) and gold. The volume of the rock is 3.40 10-4 m3 and its mass is 3.87 kg. What percentage of the rock is gold by mass
A nonconducting solid sphere of radius R has a volume charge density that is proportional to the distance from the center. That is, ? = Ar for r R, Find the expressions for the electric field inside
Having taken a nap under a tree only 20 m from the finish line, Rabbit wakes up to find Turtle 19.5 m beyond him, grinding along at 1/4 m/s. How many seconds will he win or lose by
A vertical containery with base area measuring 14.0 cm by 17.0 cm is being filled with identical pieces of candy, at what rate does the mass of the candies in the container increase
A parallel-plate capacitor has fixed charges +Q and -Q. By what factor does the energy stored in the electric field change
A uniform electric field of magnitude 380 N/C pointing in the positive x-direction acts on an electron, What is the work done by the field on the electron
A cubic centimeter in a typical cumulus cloud contains 50 to 500 water drops, which have a typical radius of 10 µm. How much mass does the water in the cloud have
During heavy rain, a rectangular section of a mountainside measuring 2.8 km horizontally, 0.80 km up along the slope, What is the mass of the mud sitting above an area of 4.0 m2 in that section
Hydraulic engineers often use, as a unit of volume of water, the "acre-foot", What volume of water, in acre-feet, fell on the town