What is the reason that glass is less of an energy saver than steel or aluminum if it is recycled? Explain your reasons for your answer
What will be an ideal response?
The mixture that makes glass occurs at a greater temperature than the temperature
of melting of the metals, and adding cullet does not make much difference in this
temperature.
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A galaxy has a recession velocity of 10,000 km/sec. If the Hubble constant is 65 km/sec. per megaparsec, roughly how far away is the galaxy?
A. 25 megaparsecs B. 10 megaparsecs C. 130 megaparsecs D. 60 megaparsecs
Suppose you find a meteorite made almost entirely of metal. According to current science, which of the following statements must be true?
A) Your meteorite is a fragment of an object from the Kuiper belt. B) Your meteorite is a fragment from the core of a large asteroid that shattered in a collision. C) Your meteorite was blasted off the surface of Mars by an impact. D) Radiometric dating will show the age of your meteorite to date to the formation of our solar system.
Plants are considered part of the ?
What will be an ideal response?
A thin lens of focal length -12.5 cm has a 5.0 cm tall object placed 10 cm in front of it. What are the size and orientation of the image?
A. 4.0 cm, inverted B. 4.0 cm, upright C. 2.8 cm, inverted D. 2.8 cm, upright E. 100 cm, inverted