Acarnot engine is held between a furnace with a constant temperature of 400° c and the outside environment at a constant temperature of 30° c. there is a leak in the system which allows heat to escape directly from the furnace to the environment. the efficiency of the engine, including the effect of the leak, is 0.25. what is the ratio of the heat that flows into the carnot engine (qh1) to the heat that flows directly to the environment (qh2)? qh1/qh2 =

cell differentiation  is how generic embryonic  cells  become specialized  cells. this occurs  through a process called gene expression. gene expression is the specific combination of genes that are turned on or off (expressed or repressed), and this is what dictates how a  cell  functions.

explanation:

answer: at 24 february, 2014 the population gets twice of its initial population.

explanation:

since we have given that

the population for alpha city, t years after january 1, 2004 is given as

first we find out the initial population, i.e. t=0,

so, our quadratic equation becomes,

according to question, we have said that if the population has twice its initial population, then it becomes

so, time taken to reach this above mentioned population is given by

now, we know that time can't be negative so, we take t=9.149 years.

hence, at 24 february, 2014 the population gets twice of its initial population.

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