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A -17 nC charge is placed at the origin.
1. Find the strength of the electric field at the position (x, y) = (0cm, 5.0cm)?
2. Find the strength of the electric field at the position (x, y) = (5.0cm, 5.0cm)?
3. Find the strength of the electric field at the position (x, y) = (5.0cm, 5.0cm)?
In addition to dark matter cosmologists have proposed dark energy. The reason for this was the discovery of: A) slowing down of the expansion of the universe B) cosmic background radiation C) acceleration of the expansion of the universe D) gravitati..
A mass m is lowered gently onto a vertical spring of length L with spring constant k until it just touches the spring. Let y be the distance the spring is compressed and v be the velocity of the mass. When the mass is released from rest, the equation..
The work function for platinum is 6.35 eV. Find the cutoff wavelength for platinum
Two tiny spheres of mass 6.80 mg carry charges of equal magnitude, 72.0 nC, but opposite sign. Which ball (the one on the right or the one on the left ) has positive charge ? What is the magnitude E of the field
After solving a difficult physics problem, an excited student throws his book straight up. How much time does it take until the book hits the floor
Three forces act on an object moving with constant velocity. One force of 40.0 N due west, the other force is 25 N due south. What is the magnitude and direction of the third force
Leigh is doing a knee extension exercise using a 100 N weight strapped to her ankle 40 cm from her knee joint. For this position, what torque is created by the dumbbell about her knee joint axis
Wax An air-filled parallel-plate capacitor has acapacitance of 1.4 pF. The separation ofthe plates is doubled and wax is inserted between them. The new capacitance is 2.8 pF. Find the dielectric constant of the wax.
A small insect viewed through a convex lens is 1.6 cm from the lens and appears twice its actual size. What is the focal length of the lens
You are to build a box whose height is 0.280 times its length. what should be the ratio of the width of the box to its length
a proton is released from rest at the positive plate of a parallel plate capacitor. it crosses the capacitor and
A ball is thrown straight upward and reaches the top of its path in 1.71 s (before it starts to come back down). A second ball is thrown at an angle of 38.2 degrees with the horizontal. At what speed must the second ball be thrown so that it rea..
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