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A vessel containing 18.5 kg of water is left out where it evaporates completely. Assuming the temperature remains constant at 20?C, what is the change in entropy? The latent heat of vaporization of water at 20?C is 585 cal/g. Answer in units of kcal/K.
The left ventricle of the heart accelerates blood from rest to a velocity of + 20.3 cm/s. How much time does blood take to reach its final velocity
Antimony (atomic number 51) is composed of two principal isotopes, antimony-121, which has a mass of 120.904 atomic mass units, What is the atomic mass of natural antimony?
two 3.25-microf capacitors are connected in series across the terminals of a 50.0-hz ac generator that has a peak
An object of mass 3.00 kg, moving with an initial velocity of 5.00i m/s, collides with and sticks to an object of mass 2.00 kg with an initial velocity of ?3.00j m/s
a roller coaster has a hydraluic catapult propels the car to the top of the ride at a height of 405 ft. if the car and
The inner and outer surfaces of a 0.5-cm thick 2-m 2-m window glass in winter are 10°C and 3°C, respectively. If the thermal conductivity of the glass is 0.78 W/m · K, determine the amount of heat loss through the glass over a period of 5 h. What ..
A sphere of radius 1.0 cm is dropped into a glass cylinder filledwith a viscous liquid. The mass of the sphere is 12.0 g and thedensity of the liquid is 1200 kg/m3. The sphere reaches a terminalspeed of 0.15 m/s. What is the viscosity of the liquid?
a computer disk drive spins at 7200 rpm when a brief 30 second power outage occurs. during this time the drive slows
A 200 gram block, attached to the end of an ideal spring(horizontal) with force constant k = 70 N/m, Compute the magnitude of the maximum acceleration of the block
An atomic nucleus of mass 288 u moving at 405m/s emits an alpha particle of mass 4.0 u in the direction of its velocity. If the remaining nucleus slows to 360m/s, what velocity does the alpha particle have when it is emitted.
Draw the electron energy level and transition energy diagrams of a second electron attached to a neutral atom, i.e., a neutral atom can bind two electrons in analogy to Figs (b) and (c).
A large tank with diameter D, open to the air, contains water to a height { H}. A small hole with diameter d ( {d \ll D} ) is made at the base of the tank. Ignoring any effects of viscosity, calculate the time it takes for the tank to drain completel..
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