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in a particular region of the earth's atmosphere, the electric field above the earth's surface has been measured to be 153 N/C downward at an altitude of 241m and 171 N/C downward at an altitude of 398m. Calculate the volume charge density of the atmosphere assuming it to be uniform between 241 and 398m. Neglect the curvature of the earth.
An ideal air-filled parallel-plate capacitor has round plates and carries a fixed amount of equal but opposite charge on its plates. how much energy does it now store
A ball is thrown against a smooth wall. The bass has mass 6.0g and strikes the wall in the perpendicular direction with a speed of 12 m/s. what is magnitude of the impulse delivered by the wall
When an 82.0-kg adult uses a spiral staircase to climb to the second floor of his house, his gravitational potential energy increases by 2 x 10^3 J. By how much does the potential energy of a 17 kg child increase when the child climbs a normal sta..
A bowling ball encounters a 0.760-m vertical rise on the way back to the ball rack, as the drawing illustrates. Find the translational speed at the top
Find the forces that act on each of the three charges. a) q = -1.0 µC in vector form b) q= 3 µC in vector form b) q =5 µC in vector.
When the power is turned off on a turntable spinning at 59.0rpm, What is the angular acceleration (in rad/s2), of this turntable
A 0.030 kg lead bullet hits a steel plate, both initially at 20?C. The bullet melts and splatters on impact. How much heat is required to increase the temperature of the lead bullet and melt it
Mechanical Work is defined as a scalar product between the applied force, F and the displacement vector, d, of the motion, W = F · d. how much the mechanical work was done
A hill that has a 25.7% grade is one that rises 25.7 m, At what angle is such a hill inclined above the horizontal
A 1.0 kg ball drops vertically onto a floor, hitting with a speed of 28 m/s. It rebounds with an initial speed of 12 m/s. What impulse acts on the ball during the contact
The mass of a string is 1.00 10-3 kg, and it is stretched so the tension in it is 120 N. A transverse wave traveling on this string has a frequency of 260 Hz and a wavelength of 0.60 m. What is the length of the string?
A diatomic molecule is excited to its first rotational energy level, corresponding to J = 1. what is the angular speed of the molecule about its center of mass
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