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Millikan's experiment A microscopic spherical oil droplet, of density ρ and unknown radius, carries an unknown electric charge. The droplet is observed to have terminal speed v1 when falling vertically in air of viscosity µ.
When a uniform electric field E0 is applied in the vertically upwards direction, the same droplet was observed to move upwards with terminal speed v2. Find the charge on the droplet. [Use the low Reynolds number approximation for the drag.]
a stream of saturated liquid water at 25u25e6c is added to a 3kgs stream of steam with a pressure of 5 bar and a
Three kg of nitrogen is compressed from 110 kPa, 27 C to 1100 kPa in a polytropic process with n=1.3 in a closed system. Assuming ideal gas behavior and using nitrogen table,
Determine by direct integration the mass moment of inertia with respect to the y axis of the tetrahedron shown, assuming that it has a uniform density and a mass m.
Dimensions of the bulk modulus of elasticity are:
analyze a hydrogen jt cycle with isothermal compression occurring at 300k with an outlet pressure 2 times the
Oil (p = 800 kg/m3 , u (mu) = 3.0 x 10^-3 kg/ms) is to be pumped at a rate of at least 6.3 x 10^-5 m3/s through hydraulically-smooth horizontal pipe with an equivalent length of 300 m. The pressure at the pipe inlet is 198 kPa (abs).
a spring-mass system has a frequency of 2 hz. when the mass is decreased by 0.4 kg the frequency is changed by 25.
Air flows from a tank maintained at 5 MPa absolute and 20°C. It exits a hole and reaches a pressure of 500 kPa absolute. Assuming an adiabatic, quasi-equilibrium process, calculate the exiting temperature.
If the curve were not banked, what would be the minimum coefficient of friction between tires and road that would keep traffic from skidding out of the turn when traveling at 85 km/h?
What is the mass flow rate of oxygen in lbm/s? Note that the inside diameter of a nominal 2 inch schedule 40 steel pipe is 2.067inches. Assume ideal gas principles apply.
hydrogen gas at 35ordmc and unknown pressure state 1 enters a steady insulated system which has no work interaction
consider 2 kg of butane at pressure of 7.6 mpa in a rigid tank of 0.008 m3 volume.a calculate the temperature k of
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