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An air-filled parallel plate capacitor with a plate spacing of 1.90 cm has a capacitance of 8.10 ?F. The plate spacing is now doubled and a dielectric is inserted, completely filling the space between the plates. As a result the capacitance becomes 12.8 ?F. Calculate the dielectric constant of the inserted material.
The electric field strength is 5*10^4 N/C inside a parallel-plate capacitor with a2.2mm spacing, What is the proton's speed when it reaches the negative plate
The coefficient of static friction between the wall and the rod is μs = 0.575. Determine the minimum distance x from point A at which an additional weight w (the same as the weight of the rod) can be hung without causing the rod to slip at point A.
A hawk flies in a horizontal arc of radius 12 m at a speed of 4 m/s, and increases its speed at the rate of 1.20 m/s2. Find the acceleration (and direction) under these conditions.
What direction is white dot on the sensor pointing
An object at rest explodes into three pieces of equal masses. One moves east at 23 m/s, while the second piece moves northwest at 14 m/s. Estimate the velocity of the third piece? Suppose each piece has a mass of 2 kg.
What pressure is acting on the walls of drum
To save on heating costs, the owner of a green house keeps 680 kg of water around in barrels. What is the minimum ampere rating of an electric heating system (240 V) that would provide the same heating effect as the water does
A spherical conductor with radius 2.00 cm is centered on the origin and holds charge q1=-250 nC, Find the surface charge density a(charge per area) on the outside surface of the outer spherical shell
Consider a violin string with a vibrating length of 30 cm. If the speed of a wave on this string is 250 m/s, what is the tension in the string? Hint: You will have to estimate the diameter of the string. Assume the density is the same as that of s..
The bullet becomes embedded in the block. if the coefficient of kinetic friction between the block and surface is .65 what was the speed of the bullet at once before impact.
An elevator and its load have a combined mass of 1600 kg. Find the tension in the supporting cable when the elevator, originally moving downward at 12 m/s, is brought to rest with constant acceleration in a distance of 28 m.
If a bird were to start out from the origin (where the student starts) and fly directly (in a straight line) to the school, illustrate what distance would the bird cover? Express your answer in miles.
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