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- ...In an experiment, 1 kg of fuel was completely burnt. The heat produced was measured to be 9,000 kJ. a. What will be the head produced for 7 kg of fuel?I Work A. Sample Problems: 1 F= 200 Newtons d=50 meters W=? |F=5 Newtons W=75 Joules D=? Worksheet - Work & Power Problems noitudiadu? Formula: Substitution: Answer with unit of measure: IW-125 Joules d=10 meters Two won enoose Of mi F=? ozsom to rinu diw towanA Formula: Substitution: Answer with unit of measure: owesom to timu diw towanA Formula: Substitution: Answer with unit of measure: zoluol Or zba0002 76/ boar I If 150 Joules of work is needed to move a box 10 meters, what force was used?How many kJ of energy does it take for 2.4 kg of ice at -14oC to warm up to room temperature (22oC)? SYW.
- A runner burns 60. (food) calories per km. Convert this to miles per gallon of gasoline. Assume a gallon of gasoline has 124,000 BTU, a food calorie contains 4184 J, and 1 BTU is equivalent to 1055 J.Calculate the depth to which Avogadro's number of table tennis balls would cover Earth. Each ball has a diameter of 3.75 cm. Assume the space between balls adds an extra 25.0% to their volume and assume they are not crushed by their own weight.Many decisions are made on the basis of the payback period: the time it will take through savings to equal the capital cost of an investment. Acceptable payback times depend upon the business or philosophy one has. For some industries, a payback period is as small as 2 yeas) Suppose you wish to install the extra insulation in the preceding problem. If energy cost $1.00 per million joules and the insulation was $4.00 per square meter, then calculate the simple payback time. Take the average T for the 120-day heating season to be 15.0 .
- If a marathon runner averages 9.5 mi/h, how long does it take him or her to run a 26.22-mi marathon?Most materials expand when heated. One notable exception is water between 0 and 4 , which actually decreases in volume with the increase in temperature. Which is greater for water in this temperature region, Cp or Cv ?A 1.28-kg sample of water at 10.0 is in a calorimeter. You drop a piece of steel with a mass of 0.385 kg at 215 into it. After the sizzling subsides, what is the final equilibrium temperature? (Make the reasonable assumptions that any steam produced condenses into liquid water during the process of equilibration and that the evaporation and condensation don't affect the outcome, as we'll see in the next section.)
- The air temperature drops as the atmosphere rises, at a rate9ºC every 300M. How high does an airplane fly if the air temperature is -81ºC iftook off at 0ºC?Energy is neither created or destroyed. But why cant we utilize 100 percent of the energy coming from the sun? explain this in relationto enthalphy and entropy.On food labels, we can read the food-calories of the product. The food calorie is written as "Cal" and it corresponds to 1.000 calories with the lower case 'c! In summary, one food-calorie - 1 kcal = 1 Cal = 4.186 Joules How many Joules will be released by combustion of 1 kg of rice, if rice has 3,200 food-calories per kilogram? O 1.3 J O 13,395,200J O 13J O 1,340 J
