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Two charges of +0.250 C are placed at the points (1.25 mm, 0) and (-1.25 mm, 0). A third charge of -0.450 C is placed at the origin. a. What is the electric field at the point (0, 2.20 mm)? b. At what point on the y-axis will E be zero? Show graphs and vectors. Units must be correct.
A block of mass m is suspended from the string a height h above the ground. The string is wrapped around a disk shaped pulley with mass m and radius R. Find out the tension T in the string. (The answer should be in terms of variables). Rotational ..
A 70 kg meteorite buries itself 5.5m into soft mud. The force between meteorite and the mud is given by F(x) = (680 N/m^3)x^3, where x is the depth in the mud. What was the speed of the meteorite when it firstly impacted the mud.
Your cup of coffee is too hot to drink when served at 95.What is mass of an ice cube, taken from a -19.0 freezer, that will cool your coffee to a pleasant 62.
Determine the total energy radiated by the Sun each day. The Stephan-Boltzmann constant is 5.6696 × 10-8 W/m2/K4, e = 1, and the radius of Sun is 6.96 × 108 m.
Two wires are identical, except that one is aluminium and one is gold. The aluminium wire has a resistance of 0.18. What is resistance of the gold wire.
What is an average speed for the new trip
Two cylindrical rods are identical, except that one has a thermal conductivity k1 and the other has a thermal conductivity k2. As the drawing shows.
A rocket rises with constant acceleration to an altitude of 85 km, at which point its speed is 3.1km/s.what is the acceleration in m/s.
A styrofoam box used to keep drinks cold at picnic has total wall area(including the lid) of 0.80m2 and wall thickness 2 cm. it is filled with ice, water and cans at 0 Celsius. What is the rate of heat flow into the box if temperature of the outsi..
how much weight must each man support. by how much would the temperature of the air rise over a period of 2.0 h due to the metabolism of the people.
Using energy considerations, compute the average force the beam exerts on the pile driver while the pile driver is brought to rest.
A hot-air balloon has just lifted off and is rising at the constant rate of 2.2 m/s . Suddenly one of the passengers realizes she has left her camera on the ground.
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