Does all the ice melt calorimetry? Once all the ice has melted, the temperature of the liquid water rises, absorbing heat at a new constant rate. At 100oC the water begins to boil….Heat and Change in Physical State. Substance Mercury Melting Point (oC) –38.9 ΔHfus, (J/g) 11.8 Boiling Point (oC) 357 ΔHvap (J/g) 272 When […]
What is one of the most important developmental tasks in late adulthood?
What is one of the most important developmental tasks in late adulthood? Newman and Newman (2012) identify developmental tasks as areas of learning for most people in modern society. They associate the stage of later adulthood (60 to 75) with such tasks as accepting one’s life, redirecting energy toward new roles, promoting intellectual vigor and […]
Is the Carnot cycle 100% efficient?
Is the Carnot cycle 100% efficient? No,, never . It can be 100℅ only if the sink temperature is zero or the source temperature is infinite (very large value). Carnot is an ideal cycle is provides benchmark to compare efficiency of other cycles. Carnot efficiency is the maximum efficiency that can be achieved in a […]
Is it harder to kick a deflated football?
Is it harder to kick a deflated football? “Basically, a little bit of air removed from the ball makes it easier to kick accurately because you get more ball surface in contact with the toe,” Timothy Gay, physics professor at the University of Nebraska, told NBC News. Why does cold air make balls deflate? As […]
What are the important social services to be delivered by the government?
What are the important social services to be delivered by the government? Social services include the benefits and facilities like education, food assistance, health care, police, fire service, job training, subsidized housing, adoption, community management, policy research, and lobbying. Why is it important to respect the right of social workers? Respect is a core social […]
Why do we need to follow Seat Belts Use Act?
Why do we need to follow Seat Belts Use Act? Seat belts reduce serious crash-related injuries and deaths by about half, according to the National Highway Traffic Safety Administration. The simple act of wearing a seat belt is the single most effective way to reduce the risk of fatality in a crash. Why are seat […]
What were two major shortcomings of Mendeleev periodic table?
What were two major shortcomings of Mendeleev periodic table? State two limitations of Mendeleev Periodic Table Elements with large differences in properties were included in the same group. No proper position could be given to the element hydrogen. The increasing order of atomic mass was not strictly followed throughout. How were the drawbacks removed in […]
What is difference between NHE and she?
What is difference between NHE and she? Technically, a SHE and NHE are different. The NHE measures the potential of a platinum electrode in a 1 N acid solution, while the SHE measures the potential of a platinum electrode in an ideal solution (current standard of zero potential at all temperatures). What does V Vs […]
What is the balancing?
What is the balancing? A state of equilibrium or parity characterized by cancellation of all forces by equal opposing forces. 3. The power or means to decide: matters that fell outside the judge’s balance. What are different types of balancing? There are three different types of balance: Symmetrical, asymmetrical and radial. What are the 4 […]
Does snow make sounds?
Does snow make sounds? Snow can make both ‘squeaky’ and ‘crunchy’ sounds. Snow is a mixture of ice crystals, liquid water and air, and the sound it makes when you walk on it depends on the proportions of this mixture. When you walk on snow, your boots apply pressure that can break its ice crystals. […]