chemistry
How many photons are produced in a laser pulse of 0.324 J at 631 nm?
chemistry
To resolve an object in an electron microscope, the wavelength of the electrons must be close to the diameter of the object. What kinetic energy must the electrons have in order to resolve a protein molecule that is 8.10 nm in diameter? Take the mass of an electron to be 9.11&...
English
List the compound nouns in this sentence. Philo T. Farnsworth was the first American inventor to use television technology. The answers were Philo T Farnsworth, American inventor, and television technology. Can a proper noun also be a compound noun?
PHYSICS
A car is safely negotiating an unbanked circular turn at a speed of 29 m/s. The road is dry, and the maximum static frictional force acts on the tires. Suddenly a long wet patch in the road decreases the maximum static frictional force to one-ninth of its dry-road value. If th...
Math. Due in 4 hours. Please helpp!
A female moth lays nearly 150 eggs. In on year there may live up to five generations. Each larva eats about 20mg of wool. Assume that 2/3 of the eggs die and that 50% of the remaining moths are females. Estimate the amount of wool that may be destroyed b the descendants of one...
i don't get it
thanks
i don't get it
why does everybody not like a teacher's pet?
math
What ia A inverse if A = (3 -2) (3 2)
math
Solve the inequality 2x^2<12-5x
math
Solve the equation 3^2x - 12 x 3^x + 27 = 0
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