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An open-tube mercury manometer is used to measure the pressure in an oxygen tank. (a) When the atmospheric pressure is 990 mbar, what is the absolute pressure (in Pa) in the tank if the height of the mercury in the open tube is 27.0 cm higher than the mercury in the tube connected to the tank. Pa (b) What is the absolute pressure if the open tube mercury height is instead 4.2 cm lower than the mercury in the tube connected to the tank. Pa
What is the electric field strength between the disks? A proton is shot from the negative disk toward the positive disk. What launch speed must the proton have
An AC generator supplies an rms voltage of 115 V at 60.0 Hz. It is connected in series with a 0.350 H inductor, a 3.10 ?F capacitor and a 256 ? resistor. What is the peak voltage across the inductor
A ray of light in air makes an angle of incidence of 30.2 as it enters an unknown liquid. the refracted ray in the fluid meassured to be 22.5. compute the index of refraction of the unknown liquid
Determine the magnitude of the force on an electron traveling 3.65×10^5 m/s horizontally to the east in a vertically upward magnetic field of strength 0.70 T
Two spherical objects have a combined mass of 200. The gravitational attraction between them is 8.01×10-6 while their centers are 21.0 apart.
A 100 gram bead is free to slide a long a piece of 0.8 m long string ABC. the ends of the string are attached to a vertical rod at point A and B, which are o.4m apart. when the rod is rotated, BC is Horizontal and equals to 0.3m. (a) what is the t..
A straight ladder is leaning against the wall of a house. Theladder has rails 4.40 m long,joined by rungs 4.500 m long. What should be the thicknessof the flat rock
A ball dropped from a height of 4.00 m makes an elastic collision with the ground. Assuming no mechanical energy is lost due to air resistance, a) show that the ensuing motion is periodic, b) find the period of the motion.
A scaffold of mass 43 kg and length 7.0 m is supported in a horizontal position by a vertical cable at each end. What is the tension in the cable closer to the painter
Determine the force of gravity between earth (mass =6.0x10^24kg) and the moon (mass= 7.4x10^22kg). The average earth-moon distance is 3.8x10^8m.
two boxes are sitting on a horizontal frictionless surface. Box A has a mass of 30kg and box B has a mass lof 20 Kg. what is the tension in the connecting rope
A metal sphere A has charge Q. Two other spheres, B and C, are identical to A except they have zero net charge. How much charge is on each sphere
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