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Two small charged spheres, each has a mass of 8.00 x 10^-2 kg hang in equilibrium as shown. The length of each string is L = 0.120 m and the angle = 7.00 degrees. The charge on one sphere is q while on the other sphere is 4q. Decide the magnitude of the charge on each sphere
A soap bubble (n=1.33) is floating in air. If the thickness ofthe bubble is 98 nm, what is the wavelength of visible light that is most strongly reflected
Two identical clocks are synchronized. One is then put in orbitdirected eastward around the Earth while the other remains on the Earth. Which clock runs slower? When the moving clock returns tothe Earth, are the two still synchronized?
A 66 N m torque acts on a wheel with a moment of inertia 175 kg m2. If the wheel starts from rest, how long will it take the wheel to make one revolution? The system is released from rest and accelerates under the weight of m2.
A parallel-plate capacitor is formed from two 1.0 {rm cm} times 1.0 {rm cm} electrodes spaced 2.4 {rm mm} apart. The electric field strength inside capacitor is 1.0times10^{6};{rm{N/C}}.
The speed of sound in air at 20 C is 344m/s. How many milliseconds does each vibration take
An old oaken bucket of mass 6.75 kg hangs in a well at the end of a rope. The rope passes over a frictionless pulley at the top of the well, How much work does gravity do on the bucket
a rigid tank is divided into two rooms by a membrane both containing water. room a is at 200 kpa ??0.5 m3kg va1 m3 and
An air-track glider attached to a spring oscillates with a period of 1.50 seconds. At t = 0, the glider is 4.40 cm left of the equilibrium position and moving to the right at 31.9 cm/s. What is the phase constant?
A point source of light illuminates an aperture 1.90 away. A 11.5 -wide bright patch of light appears on a screen 1.40 behind the aperture. How wide is the aperture
A light, rigid rods is 76.9 centimeter long. Its top end is pivoted on a low-friction horizontal axle. Find what minimum speed at the bottom is required to make the ball go over the top of the circle
It was revealed that 120 people had only 1 admission, 81 had 2 admissions, 48 had 3 admissions, 18 had 4 admissions, 18 had 5 admissions, and 15 had 6 admissions or more admissions. Does the data support the mayor's claim? Show the calculations or..
A 340-N sphere 0.20 m in radius rolls without slipping 6.0 m down a ramp that is inclined at 28° with the horizontal. What is the angular speed of the sphere
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