Air enters the compressor of a cold air-standard Brayton cycle with regeneration at 100 kPa, 300 K, with a mass flow rate of 6 kg/s. The compressor pressure ratio is 10, and the turbine inlet temperature is 1400 K. The turbine and compressor each have isentropic efficiencies of 80% and the regenerator effectiveness is 80%. For k 5 1.4, calculate (a) the thermal efficiency of the cycle. (b) the back work ratio. (c) the net power developed, in kW. (d) the rate of entropy production in the regenerator, in kW/K

The table below shows all of the possible outcomes for rolling two six-sided number cubes.A table containing 36 possible outcomes. There are 5 desired outcomes.What is the probability of rolling a sum of 8? aStartFraction 1 over 12 EndFraction bStartFraction 1 over 6 EndFraction cStartFraction 5 over 36 EndFraction dStartFraction 7 over 36 EndFraction Two students will be chosen at random from 8 boys and 12 girls. What is the probability that a boy then a girl will be chosen? Remember to simplify your fraction! *4 points What is the exposition of diary of a whimpy kid wrecking ball Which careers could be touched by biology? The radius of a circle is 4 yards. What is its circumference? what is a domain, division, family, and taxon? What are the kingdoms currently in use Sean needs to figure out how much paint he needs in order to cover all of the sides of his ramp. what is the surface area of the ramp? a) 102 cm2 b) 210 cm2 c) 258 cm2 d) 432 cm2 A mutation that results in a single amino acid substitution in Ras abolishes its ability to hydrolyze GTP, even when GTPase-activating proteins (GAPs) are present. Approximately 30% of human cancers have this mutation in Ras. The pharmaceutical company AztraZeneca, which markets popular breast cancer drugs like Iressa (generic: Gefitinib) has recently developed a new drug that prevents the dimerization of a receptor tyrosine kinase expressed in lung cancer cells, which signals via Ras. Would you expect this new drug to be effective for the treatment of cancers that express the mutant form of Ras? Which of the following is not an effect of climate change?Rising sea levelsCoastal floodingIncreased glacial iceExtreme weather Please help with this. Thank you En un laboratorio los cientificos han detectado que la poblacion de bacterias disminuye con la administracin con ciertos antibioticos pero luego de un tiempo esto se vuelve inmune y crece nuevamente ellos encontraron que la funcion que modela la poblacion de bacterias es Calculate the concentration of acetic acid (pka 54.76)and sodium acetate necessary to prepare a 0.2 m buffer solution at pH 5.0 What is the concentration of hydronium in each of the following cases:[OH-] = 10-12 M ?[OH-] = 10-2 M ? How many liters of H2 gas, collected over water at an atmospheric pressure of 752 mm Hg and a temperature of 21.0C, can be made from 3.566 g of Zn and excess HCl? The partial pressure of water vapor is 18.65 mm Hg at 21.0C. How do clear organizational patterns best help readers understand a text What is the m1? 21 42 71 82 You have inherited land that was purchased for $40,000 in 1990. The value of the landincreased byapproximately 5% per year. Which relationship would represent the value of the land in theyear 2020 What is the equation of the following graph in vertex form? y = (x 2)2 + 1 y = (x 1)2 + 2 y = (x + 2)2 + 1 y = (x + 2)2 1 What do business owners do with employees if they have to temporarily close Find the arc length of the following curve on the given interval. x equals 8 t minus 7 comma y equals 15 t minus 6x=8t7, y=15t6, 0 less than or equals t less than or equals 40t4 The length of the curve is nothing. (Type an integer or a fraction.)