What is the most efficient cycle for a steam power plant? The Rankine cycle is the ideal cycle for vapor power plants; it includes the following four reversible processes: 1-2: Isentropic compression Water enters the pump as state 1 as saturated liquid and is compressed isentropically to the operating pressure of the boiler. What are […]
What is the moral of the story of an hour?
What is the relationship of kinetic and potential energy?
What is the relationship of kinetic and potential energy? The primary relationship between the two is their ability to transform into each other. In other words, potential energy transforms into kinetic energy, and kinetic energy converts into potential energy, and then back again. At what position does the ball have the greatest potential energy? The […]
When was the last partial lunar eclipse 2020?
When was the last partial lunar eclipse 2020? November 29–30, 2020 Penumbral Lunar Eclipse This is the last penumbral lunar eclipse of 2020. Can I see the lunar eclipse in 2020? The final lunar eclipse of 2020 will appear over North and South America, the Pacific Ocean and its neighboring regions on Nov. 29-30. This […]
How often does the jet stream shift?
How often does the jet stream shift? This movement creates an air current, or wind. A jet stream is a type of air current that forms high in the atmosphere. On average, jet streams move at about 110 miles per hour. Why do waters sink in the North Atlantic? Water flowing northward becomes modified through […]
Is it a look or take Alook?
Is it a look or take Alook? The difference between “have a look” and “take a look” is geographical rather than semantic. The former phrase is usually used in the UK, whereas the latter is usually used in the USA. Is have a look formal? Both of the sentences that you suggested are grammatically correct, […]
What are two examples of the Doppler effect?
What are two examples of the Doppler effect? The drop in pitch of ambulance sirens as they pass by and the shift in red light are common examples of the Doppler Effect. Edwin Hubble made the discovery that the universe expands as a consequence of the Doppler Effect. Where is the Doppler effect used? Doppler […]
How do you know if a sample is representative?
How do you know if a sample is representative? A representative sample should be an unbiased reflection of what the population is like. There are many ways to evaluate representativeness—gender, age, socioeconomic status, profession, education, chronic illness, even personality or pet ownership. What percentage of sample is representative? For example, in a population of 1,000 […]