Magnitude of electrostatic force exerted
A charge of 4.40 10-9 C is located 3.0 m from a charge of -2.95 10-9 C. Find the magnitude of the electrostatic force exerted by one charge on the other.
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Consider a meter stick with 4 masses hanging on it. The first mass is 100 grams and is at 10 cm. The second is 50 grams at 60 cm. The third is also 100 grams, but is at 60 cm. Where is the fourth mass (200 grams) located?
An 92 kg parachutist descends through a vertical height of 420m with constant speed. Find the increase in entropy produced by the parachutist, assuming the air temperature is 21 degrees C
Aluminum has a density of 2.7 103 kg/m3 and a molar mass of 27 g/mol. The Hall coefficient of aluminum is R = -3.0 10-11 m3/C. What is the number of conduction electrons per aluminum atom?
Find the transmitted intensity for each of these solutions when placed between crossed polarizers. The incident beam is unpolarized and has an intensity of 10.0 {rm W/m^{2}}.
A centrifuge rotor has a moment of inertia of 3.40 10-2 kg·m2. How much energy is required to bring it from rest to 8000 rpm?
A banked circular highway curve is designed for traffic moving at 67 km/h. The radius of the curve is 209 m. Traffic is moving along the highway at 48 km/h on a rainy day. What is the minimum coefficient of friction between tires and road that wil
A positively charged particle of mass 6.00 10-8 kg is traveling due east with a speed of 25 m/s and enters a 0.46 T uniform magnetic field. What is the magnitude of the charge of the particle?
A second baseman tosses the ball to the first baseman, who catches it at the same level from which it was thrown. The throw is made with an initial speed of 15.0 m/s at an angle of 38.0^circ above the horizontal. What is the horizontal component o
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