Increasing the efficiency of carnot engine
A Carnot engine whose low-temperature reservoir is at 17.7°C has an efficiency of 29.2%. By how much should the Celsius temperature of the high-temperature reservoir be increased to increase the efficiency to 66.0%?
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In an experiment, 99.0 g of aluminum (with a specific heat of 900 J/kg·K) at 93.0°C is mixed with 88.0 g of water (with a specific heat of 4186 J/kg·K) at 32.0°C, with the mixture thermally isolated.
Four different kinds of radar systems, designed to detect or monitor the airspace around a major airport for high flying objects, low flying objects, runway traffic, and wind shear, operate independently.
The Woodsburg Co. maintains a debt-asset ratio of 0.40 and has a tax rate of 35 percent. The firm does not issue preferred stock. Woodsburg's common stock is currently selling at a market price of $39.956 a share.
Cambria owns equipment that cost $93,500 with accumulated depreciation of $64,000. Cambria asks $35,000 for the equipment but sells the equipment for $33,000.
Percent coupon and pay interest semi-annually. Currently, the bonds are priced at $1,063.15. The company issued this 20-year bond twelve years ago. What is the yield to maturity?
Sylvester Corporation sold land having a fair market value of $1,400,000 in exchange for a 10 year non-interest bearing promissory note in the face amount of $3,022,488.
A Carnot engine absorbs 53.2 kJ as heat and exhausts 33.0 kJ as heat in each cycle. Calculate (a) the engine's efficiency (no unit) and (b) the work done per cycle in kilojoules.
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