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Seven liters of a fluid with a specific heat of 2.93 kJ/(kg x K) or 0.700cal/(g x K) at 20C is mixed with three liters of the same fluid at 32C. Assume that the fluid is insulated thus that no energy can flow into it or out of it. Evaluate what is the final temperature of the fluid? You don't know the density of the fluid, but you do know that the density is constant over this temperature range.
A 2.8-kg piece of aluminum at 28.5 degrees celsius is placed in 1.0 kg of water in a Styrofoam container at room temperature (20 degrees celsius)
Why is you are not harmed with the contact of a charged metal ball, although its voltage may be very high? Is the reason similar to why you are not harmed by greater-than-10000 C sparks from the Fourth-of-July sparkler? Define your answer in terms..
A "Carnot" refrigerator (reverse of a Carnot engine) absorbs heat from the freezer compartment at a temperature of -17°C, How much work must be done by the refrigerator to change 0.20 kg of water at 24°C into ice at -17°C
A camel sets out to cross the desert, which is 45.2 km wide in the north-south direc- tion. Calculate the camel's eastward displacement while he crosses the desert
How to find the position and height of an image
A standard deck of cards contains 52 different cards. A poker hand consists of five cards, chose randomly. How many different poker hands are there
If the centripetal force applied to a body moving in a uniformcircular motion is suddenly turned off, describe the subsequenttrajectory of the body.
Two small stereo speakers are 2.8 m apart and act as a double-slit interference experiment with sound waves. If the opposite wall of the room is 7.5 m away and the sound frequency is 1.4 kHz, what is the distance among the two interference maxima nea..
Comet Halley moves about the Sun in an elliptical orbit with its closest approach to the Sun being about d1=0.59 AU, What is its speed when it is furthest away from the sun
A material is formed into a long rod with a square cross section 0.59 cm on each side. What is the resistivity of the material
A piano string with a length of 1.15-m and a mass of 20.0-g isunder a tension of 6.30×10^3 N. What are the frequencies of the next two harmonics
A ball is thrown upward at a speed v0 at anangle of 53.0° above the horizontal. It reaches a maximumheight of 8.4 m. How high would this ball go
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