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Two identically charged particles separated by a distance of 8.9 meter repel each other with a force of 7.5 Newton. Evaluate what is the magnitude of the charges?
A man working out in a gym has a metabolic rate of 2500 kJ/h. If he eliminates 0.34 kg of perspiration during that hour, find at what rate is thermal energy dissipated by evaporation of sweat
500 J of energy are transferred to a system in the form of heat while the thermal energy increases by 100 J . How much work is done by the system
A magnetic field is directed perpendicular to the plane of a 0.15-m × 0.30-m rectangular coil consisting of 240 loops of wire. To induce an average emf of –2.5 V in the coil, the magnetic field is increased from 0.1 T to 1.8 T through a time interval..
a box sits on a horizontal wooden board. the coefficient of static friction between the box and the board is 0.25. you grab one end of the board and lift it up, keeping the other end of the board on the ground. what is the angle between the board ..
A water filled pipe has water flowing at 5.70 m/s in a section of pipe where the diameter is 19.2 cm, What is the volume flow rate through the smaller pipe
imagine a very heavy cube of pure gold that is 1.40 m on a side. approximate the atoms in this cube as little cubes.
You're viewing a pair of green (wavelength=550nm) butterflies on a tree branch. What is Rayleigh's minimum angle for resolution
A 5000 W electric heater is used for 32 hours. Calculate the energy consumed in this period. The plates are seperated by a distance of .100 mm. what is the current drawn by the heater
A hand-cranked AC generator is used to cause 0.65 A of current (rms), What is the minimum average rate at which work must be done on the generator
Radio waves from a star, of wavelength 247 m, reach a radio telescope by two separate paths. One is a direct path to the receiver, which is situated on the edge of a cliff by the ocean. The second is by reflection off the water.
Two forces are applied to a car in an effort to move it, as shown in the following figure, where F1 = 415 N and F2 = 354 N. What is the resultant of these two forces
A 5.2 meter wire with mass of 87 gram is attached to the mast of a sail boat. Evaluate the tension for a 97 gram wire
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