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90 grams of water at 80°C are mixed with an equal amount of water at 20°C in a completely insulated container. The final temperature of the water is 50°C.
How much heat is lost by the hot water?
cal (magnitude only)=
How much heat is gained by the cold water?
suppose you are outdoors in the Boundary Water Canoe Area of Northern Minnesota. You have in your hand the empty tube from a roll of paper towel. Outline the mathematical steps you would take to help you achieve an accurate estimate of the stars i..
Three moles of a monatomic ideal gas are heated at a constant volume of 2.23 m3. What is the change in the temperature of the gas
An archer pulls her bowstring back 0.432 m by exerting a force that increases uniformly from zero to 227 N. What is the equivalent spring constant of the bow
The isotope Po (A-218 Z-84) can decay by either alpha or beta emission. What is the energy release in each case
Find an expression for the electric potential at the center. A proton is released from rest in a uniform electric field of magnitude 1.20×10^5 N/C. Find the speed of the proton after it has traveled.
When responding to sound, the human eardrum vibrates about its equilibrium position. What is the maximum acceleration of the eardrum
You are a professional frontier re-enactor who specializes in making lead shot. How much energy is required to cool a single droplet of molten lead all the way down to 0 C
A light bulb emits light uniformly in all directions. The average emitted power is 150.0 W. At a distance of 6 m from the bulb, determine he peak value of the electric field
Only two forces act on an object (mass = 4.60 kg). (F = 68.0 N.) Determine the magnitude and direction (relative to the x axis) of the acceleration of the object.
What law of physics would be violated
A potters wheel is a disk of mass 3.50kg and radius .450m and is spinning freely around a vertical axis through its center with an angular speed of 14.0rad/s. what is the angular speed of the wheel+clay
A block is attached to a pulley and is resting on a ramp. The angle the ramp makes with the horizontal is 35 degrees. What is the mass of the block on the ramp
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