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Three charges are arranged at the vertices of an equilateral triangle with sides of length 0.06 meters. The charge at the first vertex (top point of triangle) is -5.0 μC. The charge at the bottom left vertex is 4.0 μC. The charge at the bottom right vertex is 7.0 μC.
How much Electrical Potential Energy is stored in the equilateral triangle? (The answer is -405 Joules, but I can't figure out how to get that).
An alpha particle (a helium nucleus, containing 2 protons and 2 neutrons) starts out with kinetic energy of 9.9 MeV (9.9x106 eV), What is the final kinetic energy of the gold nucleus
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Larry is standing at the edge of a vertical cliff 210m about the sea. how far has the rock traveled horizontally when it hits the water
Consider two identical +53 microcoulomb point charges placed 58 cm apart. Calculate the work (in J) required to move the test charge to a point 8 cm closer to either of the charges
two stretched strings are placed next to one another one with a length of 70.0 cm and the other with a length of 84.0
Suppose a person who has a near point of 45.5 cm is trying to view a book at a distance of 25.0 cm. What is the focal length of a lens that would take the book and make an image on the same side of the lens as the book a distance of 45.5 cm from t..
A laser with wavelength d/8 is shining light on a double slit with slit separation 0.450mm. What is the wavelength of the second laser that would place its second maximum at the same location as the fourth minimum of the first laser
Light of wavelength 420 nanometer is incident normally on a diffraction grating. The ninth-order maximum of the diffraction pattern is observed at 32.0o. Find the density of rulings for the grating
a group of students have measured the time it takes for a cart to travel some distance along a level track. their best
Jonathan and Jane are sitting in a sleigh that is at rest on frictionless ice. Jonathan's weight is 800 N, Jane's weight is 600 N, and that of the sleigh is 1000 N. Calculate the sleigh's horizontal velocity
consider an object of mass 0.1 kg oscilaating on a spring with an x- component of position given by x = (2m) cos ((5/s)t - pi/6), find the total energy of the mass/ spring system
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