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A 0.104 kg rock is attached to a 1.92 m long string and swung in a horizontal circle at a speed of 27.9 m/s. Find the tension in the string. Neglect the effect of gravity.
Two 3.25μF capacitors are connected in series across the terminals of a 50.0-Hz ac generator that has a peak voltage of 244V. Determine the rms (peak) current in the circuit
Two identical tiny spheres carrying the same charge are 1.0m apartcenter to center in vacuum and experience an electrical repulsionof 1N. what is their charge? and find the ratio of the electrostatic and gravitational forces between two electrons whe..
A 10.0 kg crate slides along a horizontal surface and has an initial speed of 8.65 m/s. What is the coefficient of kinetic friction between the crate and the horizontal surface
A race track is to have a banked curve with radius250 m. What should be the angle of the bank if the normal force alone is to allow safe travel around thecurve at 59.5 m/s
An electron enters a uniform magnet field having a flux density 200uT at a speed of 2x10 6 ms-1 perpendicular to the field. Determine the radius of its orbit, then find the required electric field strength, applied perpendicular to the magnetic f..
An electron has a mass of 0.511 MeV/c2. Calculate the speed, momentum, and total energy of a 1.19 MeV electron
if 61.5 l of oxygen at 18c and an absolute pressure of 2.45 atm are compressed to 48.8l and at the same time the
wo point charges are located as shown in the figure, with charge q1 = +1.6 C at x = ?3.0 m, y = 0, How much work must be done on the electron to move it to the origin
A light bulb is wired in a series with a 137 ohm resistor, and they are connected across a 120 Volt source. Determine the two possible resistances of the light bulb
Amotorist drives along a straight road at a constant speed of 15.0m/s. Just as she passes a parked motorcycle officer, the officerstarts to accelerate at 2.00 m/s2, to overtake her. The motorist always goes at the same speed.
A source emits sound uniformly in all directions. A radialline is drawn from this source. On this line, determine the radial positions of two points, 1.28 m apart, such that the intensity level at one point is 2.46 dB greater than that at the other.
Dr. Kerry conducted a study which found a "statistically significant" relationship between the number of books children read at home during the year and their overall GPA in school. The result is based on a sample of 20,000 children. Which of the ..
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