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There are four charges, each with a magnitude of 2.06 μC. Two are positive and two are negative. The charges are fixed to the corners of a 0.274-m square, one to a corner, in such a way that the net force on any charge is directed toward the center of the square. Calculate the magnitude of the net electrostatic force experienced by any charge.
Sources A and B emit long-range radio waves of wavelength 540 m,with the phase of the emission from A ahead of that from source Bby 90°. The distance rA from A to adetector is greater than the corresponding distancerB from B by 150 m.
two narrow slits are illuminated by a laser with a wavelength of 545 nm. the interference pattern on a screen located x
What torque do his back muscles exert about an axis through his hips.
An astronaut (Speedo) travels to a distant planet and back with speed 0.7c. He is 30 yrs old when he departs and 50 years old when he returns. how old is Goslo when Speedo returns
An overhead projector has a convergent lens of focal length 35.0 cm. It projects the image of transparency on a wall 4.00 meters from the lens. how wide is the image on the screen
a certain defibrillator sends 0.12 c of charge through the heart. the capacitor responsible for holding this charge
A doubly charged helium atom whose mass is 6.6 10 to 27 kg is accelerated by a voltage of 2200 V. What will be its radius of curvature if it moves in the plane perpendicular to a uniform 0.308 T field?
0.125kg of water at 85.0 degrees is poured into an insulated cup containing 0.240kg of ice initally at 0 degrees. Calculate the mass of liquid
The equation of a transverse wave traveling along a very long string is y = 7.0 sin (0.050 ?x + 8.0 ?t), Determine the maximum transverse speed of a particle inthe string
Two charges of +12nc and +18nc are separated horizontally by28mm. What is the resultant field intensity at a point 20 mm from each charge and above a line joining the two charges?
a mortar crew is positioned near the top of a steep hill. enemy forces are charging up the hill and it is necessary for
Trucks can be run on energy stored in a rotating flywheel, with an electric motor getting the flywheel up to its top speed of 611 rad/s. What is the kinetic energy of the flywheel after charging
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