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A thin, flexible rod of length L=10 cm carries charge Q=91 N/C uniformly along its length. The rod is then bent into a semi-circle. What is the magnitude of the electric field at the center. Picture a circle and it's center, then remove half the circle, keep the "center" in the same spot and this is the figure shown in the problem.
What average force is required to accelerate 7 gram pellet from rest to 125 m/s over a distance of .8 m along the barrel of a rifle.
A spring that has a force constant of 1050 N/m is mounted vertically on the ground. By what distance does the spring compress
A child playing in a swimming pool realizes that it is easy to push a small inflated ball under the surface of the water while a large ball requires alot of force. calculate the diameter of the ball
A car travels at 35.0 m/s for 40.0 minutes and then travels at 55.0 m/s for 20.0 minutes. What is the average velocity of the car
Consider the nuclear reaction: (2/1)H + (9/4)Be --> (7/3)Li + (4/2) He. How much energy is liberated
What are ranges of wavelength and frequency
A cube of ice is taken from the freezer at -9.4°C and placed in a 94 g aluminium calorimeter filled with 315 g of water at room temperature of 20°C. The final situation is observed to be all water at 19°C. What was the mass of ice cube.
A heat engine does 180J of work per cycle while exhausting 440J of waste heat. What is the engine's thermal energy
A block of mass 2.0 kg is pushed against a vertical wall by a horizontal push (P) of 50.0 N. Find the force AND the direction of the friction
Two plates of area 743 cm^2 each are separated by a distance 52.3 cm. Calculate the capacitance of the capacitor in microfarads
For a damped oscillator with a mass of 290 g, a spring constant 80 N/m and a damping coefficient of 57 g/s, what is the ratio of the amplitude of the damped oscillations to the initial amplitude at the end of 26 cycles.
A muon formed high in Earth's atmosphere travels at a speed 0.990 0 c for a distance (as we see it) of 4 600 m before it decays. How far does the muon travel as measured in its frame
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