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What is the potential at the center of a square with point charges +1, +2,+ 2, +3 arranged at its corners and side length s? What is the work done to place the charges at the corners?
Hydrogenic atoms in an ultraviolet light fall from energy quantum state n = 9 to state n = 2 while releasing ultraviolet photons. How many photons are being released per second
Two 330 kg (733 lb) masses are separated by a distance of 4 m. Using Newton's law of gravitation, find the magnitude of the gravitational force exerted by one mass on the other
The charges are fixed to the corners of a 0.44-m square, one to a corner, in such a way that the net force on any charge is directed toward the center of the square.
q1. a violin string that is 45.5 cm long has a fundamental frequency of 490 hz.what is the speed of the waves on this
Two freight cars, each with a mass of 2.4 multiplied by 105 kg, collide and stick together. One was at first moving at 3.4 m/s and the other was at rest. What is their final speed.
A projectile ,was launched vertically from the surface, of the Moon rises to an altitude of 330km. What would be the projectile's initial speed
A wheel is spinning at 19 rad/s. Over a period of 50 s it is spinned up to 424 rad/s. Determine its angular acceleration while it was spinning up
A spherically symmetric object with a density of 1.57g/cm3 and a radius of 16.5cm is falling. Assuming is has a drag coefficient of 378g/s, what is the magnitude of terminal velocity
A 1.50mm -diameter glass bead is positively charged. The potential difference between a point 1.50mm from the bead, What is the charge on the bead
If 20 grams of hot water at 80 C is poured into a cavity in a very large block of ice at 0 C, what will be the final temperature of the water in the cavity? How much ice should melt in order to cool the hot water down to this temperature.
You have an uncharged capacitor (12 x 10-6 F) and a resistor (1000 ohms) connected to a battery of 200 V at time t=0, What is the final charge on the capacitor
An 83 kg fullback moving east with a speed of 5.4 m/s is tackled by a 96 kg opponent running west at 3.8 m/s, find the velocity of the players immediately after the tackle
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