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In an optical fiber system refractive index of the core is 1.52 and that of cladding is 1.48 find the critical angel of the system
Susan plans to invest $400 at 15% annual interest compounded continuously. When will her investment triple in value?
Suppose $200 is invested at 6% annual interest compounded continuously. When will the investment be worth $800?
A printing machine valued at $3000 depreciates at a constant rate of 18% per year. In how many years will the machine be worth $750?
Some hydrogen gas is collected over water at 20 ◦C. The levels of water inside and outside the gas-collection bottle are the same. The partial pressure of hydrogen is 509.4 torr. What is the barometric pressure at the time the gas is collected? Answer in units of torr.
Helium gas is collected over water at 25◦C. What is the partial pressure of the helium, given a barometric pressure of 760 mm Hg? Answer in units of mm Hg.
A town has a population of 18000 and grows at 2% every year. What will be the population after 12 years, to the nearest whole number?
A sample of oxygen gas occupies a volume of 0.250 L at 740 torr pressure. What volume will it occupy at 800 toor pressure?
Consider a population of size N = 9. How many different random samples of size n = 6 are possible from a population of N = 9?
An object of mass 6kg falls from a height of 90m above the ground. Calculate its total energy falling through 40m.
