Show that the ideal efficiency is 90% for an engine in

College Physics 1
Problem 23PE Problem (a) A light-rail commuter train accelerates at a rate of 1.35 m/s2 . How long does it take to reach its top speed of 80.0 km/h, starting from rest? (b) The same train ordinarily decelerates at a rate of 1.65 m/s2 . How long does it take to come to

Probability and Statistical Inference 9
Bowl A contains three red and two white chips, and bowl B contains four red and three white chips. A chip is drawn at random from bowl A and transferred to bowl B. Compute the probability of then drawing a red chip from bowl B.

An Introduction to Chemistry 2
Problem 42QP Tetraphosphorus trisulfide, P4S3, is used in the heads of wooden matches. This material is manufactured by the heating of a mixture of red phosphorus and sulfur. 8P4(s) + 3S8(s) ?8P4S3(s) What is the limiting reactant when each of the following sets of quantities of reactants is mixed? (

Fundamentals of Physics 10
An old streetcar rounds a flat corner of radius 9.1 m, at 16 km/h. What angle with the vertical will be made by the loosely hanging hand straps?

Elementary Principles of Chemical Processes 3
The measured volumetric flow rate of ethane at 10.0 atm absolute and 35C is 1.00 X 103 Llh. Using an estimated value of the second virial coefficient in the truncated virial equation (Equation 5.3-4), (a) calculate V(Llmol); (b) estimate the compressibility factor, Z; and (c) determine the mass flow

Myers' Psychology for AP 2
Which of the following statements is true of alcohol? a. Alcohol is a stimulant because it produces insomnia. b. Alcohol is a depressant because it produces bipolar disorder. c. Alcohol is a stimulant because people do foolish things while under its influence. d. Alcohol is a depressant because it ca

Psychology 12
Who was Pavlov, and what are the basic components of classical conditioning?

Chemistry 13
Because fluorine has seven valence electrons (\(2s^2 2p^5\)), seven covalent bonds in principle could form around the atom. Such a compound might be \(FH_7\) or \(FCl_7\). These compounds have never been prepared. Why?