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1) A vessel contains 32 grams of dry ice (solid carbon dioxide) at T = -78°C, the temperature where it transitions between a solid and a gas at atmospheric pressure. How much energy is required for the carbon dioxide to sublimate? (Ls = 136.38 cal/g)
2) A 35.8 gram piece of iron is placed in a calorimeter filled with 72.1 grams of water at room temperature (23°C). The water heats up and then stabilizes at a temperature of 27°C. Assuming no heat loss to the room or the calorimeter itself, what was the original temperature of the iron sample?
3) A piece of ice weighing 31.9 grams is placed in a calorimeter with 130.7 grams of water at 54.4 degrees Celsius. Assuming no losses and that the calorimeter is perfectly insulated, what is the final temperature?
Calculate the wavelength ?1 for gamma rays of frequency f1 = 6.40×10^-14 Now express this gamma-ray wavelength in nanometers
An 88 kg spacewalking astronaut pushes off a 640kg satellite, exerting a 640N force for the 0.60 s it takes him to straighten his arms.
If the initial speed of the block is increased to infinity, it turns out that the time taken for the block to come to a rest approaches a finite value whereas the distance traveled approaches infinity, Find the maximum time taken for the block to c..
A thin spherical shell of mass 0.25 kg and radius 0.15 m is released from rest from the top of a 3.0-m high ramp. What would the linear speed be at the bottom
A 12 ohm resistor, 16 mH inductor, and 95 microFcapacitor are connected in series to a 30 V (rms) source having variable frequency. Find the heat dissipated in the circuit during one period
Barometric pressure in the eye of a hurricane is 0.91atm (27.2 in of mercury). How does the level of the ocean surface under the eye compare with the level under the distant fair-weather region where the pressure is 1.0atm.
An air puck of mass 0.029 kg is tied to the string and allowed to revolve in a circle of radius 2.0m on a frictionless horizontal surface. The other end of the string passes through a hole in the center of surface, and a mass of 2.6 kg is tied to it...
A high-voltage transmission line with a resistance of 0.33 omegacap.gif/km carries a current of 1040 A. compute the power loss due to resistance in the line
A constant electric field E=100 N/C*i is present throughout a region of space that includes the plane bounded by the x, compute The electric flux at the plane's surface
A tiger leaps horizontally from a 6.5 m high rock with a speed of 4.1 m/s. How far from the base of the rock will she land
A woman passes through a revolving door with a tangential speed of 1.6m/s if she Is 70 m from the center door, what is the door angular speed
A resting person requires 14.5-L of per hour to maintain metabolic activities. Such a person breathes in 0.510L of air at approximately 32.0 degrees celsius with each breath. The inhaled air is 20.9 percent while the exhaled air is 16.3percent.
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