The electric arc furnace uses ___________% scrap steel.
Fill in the blank(s) with the appropriate word(s).
100
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Fire a cannonball with enormous speed from a hypothetical cannon and it curves due to gravity. Shine a light from a flashlight parallel to the cannon and it
A) follows a straight-line path. B) curves downward as much as the cannonball. C) curves slightly upward.
A helium balloon rises because of
a. Archimedes' principle b. Pascal's principle c. Bernoulli's principle d. Torricelli's principle e. none of these principles
When the alignment of the Sun, the Moon, and Earth produce a lunar eclipse, the body that is in between the other two is the
A) Sun. B) Moon. C) Earth.
An elephant can hear sound with a frequency of 15 Hz. What is the wavelength of this wave if the speed of sound in air is 343 m/s?
What will be an ideal response?