Thursday

July 10, 2014

July 10, 2014

Total # Posts: 11

**Astronomy**

Why are there multiple lenses cemented together to form the objective lens and the eyepiece lens?

**Physics**

What would our seasons be like if the rotation of the Earth's was aligned with the plane of the ecliptic so that the north pole pointed directly at the Sun once per year.

**Science **

Is planet X a Large asteroid?

**Astronomy**

Why is it possible to see the planet Mercury at 6:45 pm on February 5, 2014.

**Astronmy**

How far in degrees will Mercury suppose to be from the Sun on February 5, 2014 and how did you determine it?

**Physics**

The peak wavelength and observed color of a 50,000 K star is 58nm and too blue to see with the human eye. True or False.

**physics**

A hydrogen atom in an excited state emits a Balmer beta photon followed by a Lyman alpha photon. The electron decayed from the third excited state to the first excited state to the ground state. True or False.

**statistics**

Imagine that the probability of answering this question correctly is only p = .4, and on tests in which it is used, only 8 people attempt it. On what proportion of such tests will fewer than 3 people answer the question correctly?

**Statistics**

Imagine that the probability of answering this question correctly is only p = .4, and on tests in which it is used, only 8 people attempt it. On what proportion of such tests will fewer than 3 people answer the question correctly?

**Math**

Sam measured the out side of his vegetable garden.The sides measured 6 feet, 3feet, 6feet, and 3 feet.How much fencing does sam need to put a fence around the whole garden?Show two different methods of finding the solution.

**math**

The amounts of oil pumped from an oil well in each of the years 2001 to 2004 formed a geometric progression with common ratio 0.9. The amount pumped in 2001 was 100000 barrels. Calculate in which year the amount pumped will fall below 5000. The amounts of oil pumped from an oi...

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