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A uniform electric field of magnitude 7.5×10^5 N/C points in the positive x direction. Find the change in electric potential between the origin and the point (0, 6.0 m ).
A chain that can support 2000 N is suspended between two trees. A 200 kg motor hangs from the middle. The slack in the chain makes each half slant upward 20°. Will the chain break?
Two protons are 3.0fm apart. ( 1fm = 1 femtometer = 1 x 10^-15 m ) a. What is the magnitude of the electric force on one proton due to the other proton?
A small metal sphere q1, carrying a net charge of = -2.60microC , is held in a stationary position by insulating supports. A second small metal sphere, q2 with a net charge of = -7.90microC and mass
Two small plastic balls hang from the threads of negligible mass. Each ball has a mass of 0.14 g and a charge of magnitude q. The ball are attracted to each other and the threads attached to the bal
When two identical ions are separated by a distance of 2.1×10-10 m , the electrostatic force each exerts on the other is 5.4×10-9 N 1) How many electrons are missing from each ion? Express
Derive expressions for the electric-field magnitude in terms of the distance r from the center for the regions r < a, a < r < b, b < r < c, r > c.
If the apparatus is then subejcted to a unifrom electric field E parrallel to the table and perpendicular to the rod, find the net torque on the system of rod plus charges.
What is your average speed (a) from San Antonio to Houston, (b) from Houston back to San Antonio, and (c) for the entire trip? (d) What is your average velocity for the entire trip?
Two charged objects experience a mutual repulsive force of 0.34 N. If the charge of one of the objects is reduced by half and the distance separating the objects is quadrupled, what is the new force
(The square is horizontally flat, and the electron is suspended 13 nm vertically above the center of the square.) What is the magnitude of each fixed charge in coulombs?
A pendulum is made with a 4 kg mass suspended at the end of a 75 cm thin rod. The pendulum started at an angle of 20 degrees with the vertical. What is the velocity of the pendulum as it passes thro
A 1 kg mass is connected to a spring constant of 9 N/M. If the initial velocity is 4 cm /s and the initial displacement is 2 cm, then what is the maximum kinetic energy of the simple harmonic motion
The spring's mass, the recoil kinetic energy of the shuttle, and changes in gravitational potential energy will all be negligible. What distance must the spring be compressed?
A pendulum is made with a 4 kg mass suspended at the end of a 75 cm thin rod. The pendulum is started at an angle 20 degrees with the vertical. What is the velocity of the pendulum as it passes thro
If a point charge q is moved from A to B while Q is fixed in place, through what potential difference does it move? Does its potential increase or decrease?
Three charges, each of magnitude 8 nC, are at separate corners of a square of edge length 2 cm. The two charges at opposite corners are positive, and the other charge is negative. Find the force exe
A particle of mass 0.10 kg is attached to a spring of spring constant 10N/m. If the maximum acceleration of the particle is 5.0 m/s2, what is the maximum speed of the particle?
Suppose you had ignored the time it takes the sound to reach you. In that case, would you have overestimated or underestimated the height of the cliff? Explain your reasoning.
A jetliner, traveling northward, is landing with a speed of 77.9m/s. Once the jet touches down, it has 832 m of runway in which to reduce its speed to 12.8 m/s. Compute the average acceleration (mag
A sprinter explodes out of the starting block with an acceleration of +2.50m/s, which she sustains for 1.24s. Then, her acceleration drops to zero for the rest of the race. What is her velocity at (
A child operating a radio-controlled model car on a dock accidentally steers it off the edge. The car's displacement 0.9 s after leaving the dock has a magnitude of 7.9 m. What is the car's speed at
Let the x axis be parallel to the ground, the +y direction be vertically upward, and take as the origin the point on the ground directly below the top of the ramp. (a) How high above the ground is t
Your ears are sensitive to differences in pitch, but they are not very sensitive to differences in intensity. You are not capable of detecting a difference in sound intensity level of less than 1 dB
Each ball has a mass of 0.14 g and a charge of magnitude q. The ball are attracted to each other and the threads attached to the balls make an angle of 20 degrees with the vertical. a) the magnitud