What exhaust temperature enable to achieve carnot efficiency
A heat engine exhausts its heat at 380 Celsius and has a Carnot efficiency of 39%. What exhaust temperature would enable it to achieve a Carnot efficiency of 49%?
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A researcher believes exercise reduces anxiety in women. She identifies a group of women who had not exercised before but are now planning to begin exercising.
A boat of length 50 m is designed to cruise at 30 mph and is to be tested in a tow tank with a model of length 0.5 m. What is the appropriate model tow velocity in m/s?
Osmotic pressure is often used to determine the molar mass of large molecules; however, errors can be introduced into the calculationif the sample is not purified.
How fast must the wing move through the air at an altitude of 10,000 m with the same lift coefficient if it is to generate the same lift?
Find the critical value ta(alpha)/2 that corresponds to a confidence level of 95% and a sample size of 11.
The level of the water in an enclosed water tank is 40m above ground level. The pressure in the air space above the water is 120kPa, and the density of the water is 1000kg/m3. What is the water pressure at ground level?
In order to use this for chemical species that often have Avogadro's number of particles present, we employ Stirling's Approximation. Stirling's Approximation is useful for large numbers on the order of Avogadro's number.
In this same time, what is the vertical displacement of the electron? Treat up as positive.
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Approaching a new social situation is similar to solving a cognitive problem. Children approaching a group of peers need to understand the others' communication
Children's goals in social interactions Children's goals affect their strategies in social situations, and this, too, is related to their peer status
The step-by-step social information processing approach may be a better model for encounters in new situations than in familiar situations
As in other areas of development, temperament interacts with experience to pre dict peer status.
A small number of children and adolescents who are perceived to be popular, however, display a mix of positive and negative behaviors
Question: Identify and distinguish between positive and negative reinforcement contingencies.