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Calculate the electric field at the center of a square 50.6 cm on a side, if one corner is occupied by a +43.0 µC charge and the other three are occupied by -25.0 µC charges. (Assume the center of the square is at the origin and the positive charge is in the third quadrant.)
A dentist uses a small mirror of radius 45 mm to locate a cavity in a patient's tooth. If the mirror is concave and is held 14 mm from the tooth, what is the magnification of the resulting image.
2.2 mol of neon gas is initially at a pressure of 1.8 atm and a temperature of 253oc. i if the gas is cooled at
There is evidence that elephants communicate via infrasound, generating rumbling vocalizations as low as 14 Hz that can travel up to 10 km. The intensity level of these sounds can reach 97 dB, measured a distance of 6.0 m from the source.
An irregularly shaped chunk of concrete has a hollow spherical cavity inside. The mass of the chunk is 41.5 kg, What is the radius of the spherical cavity
A 14 projectile is launched at 380 at a 55angle to the horizontal. At the peak of its trajectory it collides with a second projectile moving horizontally, Find the mass of the second projectile
A helicopter rises vertically with a constant upward acceleration of 0.38 m/s^2. How soon does the wrench hit the ground
An uncharged capacitor and a resistor are connected in series to a source of emf. If emf = 6.00 V, C = 21.0 µF, and R = 100 ?, evaluate the maximum charge on the capacitor
An assistant standing on the level ground 150 m downrange from the launch point throws an apple straight up with the minimum initial speed necessary to meet the path of the arrow. Elucidate the initial speed of the apple?
A 2.1 ? 103-kg car starts from rest at the top of a 4.5-m-long driveway that is inclined at 15° with the horizontal. find the speed of the car at the bottom of the driveway
what is the momentum of a 1800-kg car traveling with a speed of 27m.s (60mph)
A pot of hot water is boiling on your stove. The pot is in the shape of a round cylinder made of aluminum which is 10 cm in radius. The aluminum is 3 mm thick.
Water (density: 10^3 kg/m^3) flows at 15 m/s through a pipe with a raidus of .04m. What is the speed of the water flow of the pipe in the second floor
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