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1. Suppose you are hiking down the Grand Canyon. At the top, the temperature early in the morning is a cool 4.69 oC. By late afternoon, the temperature at the bottom of the canyon has warmed to a sweltering 31.9 oC. What is the difference between the higher and lower temperatures in (a) Fahrenheit degrees and (b) kelvins?
2. You are sick, and your temperature is 311.1 kelvins. Convert this temperature to the Fahrenheit scale.
3. On the moon the surface temperature ranges from 381 K during the day to 1.03 x 102 K at night. Convert these temperatures to the Celsius and Fahrenheit scales. (a) 381 K in degrees Celsius; (b) 381 K in degrees Fahrenheit; (c) 1.03 x 102 K in degrees Celsius; (d) 1.03 x 102 K in degrees Fahrenheit.
4. Dermatologists often remove small precancerous skin lesions by freezing them quickly with liquid nitrogen, which may have a temperature as low as 78.1 K. What is this temperature on the (a) Celsius and (b) Fahrenheit scales?
5. A steel section of the Alaskan pipeline had a length of 50.7 m and a temperature of 15.5 oC when it was installed. What is its change in length when the temperature drops to a frigid -43.2oC?
When a person inhales, air moves down the bronchus (windpipe) at 17 cm/s. The average flow speed of the air doubles through a constriction in the bronchus. Assuming incompressible flow, determine the pressure drop in the constriction.
Two identical conducting spheres, fixed in place, attract each other with an electrostatic force of -0.6020 N when separated by 50 cm, center-to-center.
A small sphere with a mass of 1.0 g is suspended at the end of an insulating string of length 50 cm within a uniform horizontal electric eld of 12,000 N/C. What is the value of the charge on the small sphere
An aircraft weighing 849?N is accelerated?at 7?m/s2 for?13 seconds, at which time the aircraft launches.? How much work was done on the aircraft
You push your physics book 1.60 along a horizontal tabletop with a horizontal push of 2.80 while the opposing force of friction is 0.550. What is the net work done on the book
calculate the ph of a solution that has an ammonium chloride concentration of 0.050m and an ammonia concentration of
A potter's wheel moves from rest to an angular speed of 0.20rev/s. Evaluate what is its angular acceleration in radians per second
An object of 30 kg mass is pulled with a force 1.2 * 10^2 N at angle ?=30 degree over the distance 5 meter.If the coefficient of friction is 0.2, what is workdone by the force of friction
What is the magnitude of the force that maintains circular motion acting on puck.
A metal rod of mass .22kg lies across two parallel conducting rails that are a distance of .52 m apart on a tabletop. A 3.0 Ω resistor is connected across the left ends of the rails. The rod and rails have negligible resistance however significant f..
A student makes a saturated solution of KCL and 100 g of water at 20 degrees Celsius. If the student leaves the solution and all of the water evaporates, how many grams of KCL will be left in the container?
A 57.4-kg skateboarder starts out with a speed of 2.04 m/s. He does 104 J of work on himself by pushing with his feet against the ground. How much has the vertical height of the skater changed
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