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Cory Grafstein

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244. Chan Alan 11
245. Ma C Ky 11
246. Cory Grafstein 11
247. Suman Karmakar 11
248. Elizabeth Waweru 11
last 3 solved tasks
Look carefully caricature and guess the name of musician.
Look carefully caricature and guess the name of musician.
Look carefully caricature and guess the name of musician.

Vesto Melvin Slipher

Born 11 Nov 1875; died 8 Nov 1969 at age 93.American astronomer whose systematic observations (1912-25) of the extraordinary radial velocities of spiral galaxies provided the first evidence supporting the expanding-universe theory. Slipher spectroscopically measured the displacement of their spectral lines by the Doppler effect by which the wavelength of light from an object moving away from an observer will shifted toward the red end of the spectrum. Earlier, Slipher had determined the rotation periods of some of the planets by spectroscopic means. With Lowell (1912), he found Uranus had a rotation period of 10.8 hours. He also produced comparable data for Venus, Mars, Jupiter, and Saturn and showed that Venus's period was much longer than expected.

Fighting for Business

The shopkeeper was dismayed when a brand new business much like his own opened up next door and erected a huge sign which read BEST DEALS.
He was horrified when another competitor opened up on his right, and announced its arrival with an even larger sign, reading LOWEST PRICES.
The shopkeeper was panicked, until he got an idea. He put the biggest sign of all over his own shop-it read…
Main entrance.

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