Is it possible for a heat engine to operate without rejecting any waste heat to a low temperature reservoir explain? It is not possible for a engine to operate without rejecting any waste heat to a low temperature reservior. It violates the second law of thermodynamics, the operation of a heat engine a low temperature […]
Are AC and DC capacitors interchangeable?
Are AC and DC capacitors interchangeable? AC capacitor does not have polarity, but the constructions are generally based on films without any kind of electrolyte. DC is just a special case where the polarity of the voltage does not change, so you can use AC capacitors – as is – in a DC application. Why […]
When the pH of an aqueous solution is changed from 1 to 2?
Does an object with mass always have momentum?
Does an object with mass always have momentum? An object with mass will have momentum. An object which is moving at a constant speed has momentum. An object can be traveling eastward and slowing down; its momentum is westward. Momentum is a conserved quantity; the momentum of an object is never changed. Can any object […]
How does technology help the economy?
How does technology help the economy? In economics, it is widely accepted that technology is the key driver of economic growth of countries, regions and cities. Technological progress allows for the more efficient production of more and better goods and services, which is what prosperity depends on. How can technology protect us? Advancements of modern […]
How do we develop our identity?
How do we develop our identity? Building a strong sense of self Define your values. Values and personal beliefs are fundamental aspects of identity. Make your own choices. Your decisions should, for the most part, primarily benefit your health and well-being. Spend time alone. Consider how to achieve your ideals. Can we change our identity? […]
What is the z-score for a 95% confidence interval?
What is the z-score for a 95% confidence interval? 1.96 What is the relationship between sample size and margin of error? Answer: As sample size increases, the margin of error decreases. As the variability in the population increases, the margin of error increases. As the confidence level increases, the margin of error increases. What is […]
Does higher pressure mean more flow?
Does higher pressure mean more flow? Flow rate is the effect. Higher pressure causes increased flow rate. If the flow rate increases, it is caused by increased pressure. What is the relation between speed and flow rate? Flow rate and velocity are related by \(Q=A\overline{v}\\\) where A is the cross-sectional area of the flow and\(\overline{v}\\\) […]
What is the type of relationship between current and potential difference?
What is the type of relationship between current and potential difference? The current in a circuit is directly proportional to the electric potential difference impressed across the circuit and inversely proportional to the resistance of the circuit. What is potential difference unit? The potential difference between points A and B, VB – VA, is defined […]