A surprising demonstration involves dropping an egg from a third-floor window to land on a foam-rubber pad 2 in (5 cm) thick without breaking. If a 56-gram egg falls 12 m, and the foam pad stops the egg in 6.25 ms, by how much is the pad compressed?
4.8 cm
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If 700 Joules of heat is added to a system, while the system does 550 Joules, by how much does the internal energy increase?
a. –1250 J b. –150 J c. 700 J d. 150 J e. 1250 J
According to our present theory of solar system formation, which of the following statements about the growth of terrestrial and jovian planets is not true?
A) Both types of planet begun with planetesimals growing through the process of accretion, but only the jovian planets were able to capture hydrogen and helium gas from the solar nebula. B) Swirling disks of gas, like the solar nebula in miniature, formed around the growing jovian planets but not around the growing terrestrial planets. C) The jovian planets began from planetesimals made only of ice, while the terrestrial planets began from planetesimals made only of rock and metal. D) The terrestrial planets formed inside the frost line of the solar nebula and the jovian planets formed beyond it.
On planet Z, the standard unit of length is the foose. Ann the Astronaut is 5.90 feet tall on Earth. She lands on planet Z and is measured to be 94 foosi tall. Her partner Rachael is 83 foosi tall. How tall is Rachael on Earth?
a. 5.2 feet c. 5.8 feet b. 5.5 feet d. 6.3 feet
Cloud types associated with stable air include
A) cumulus and cumulonimbus. B) cirrostratus, altostratus, and stratus. C) cirrostratus, altocumulus, and altostratus. D) stratocumulus, stratus, and cirrostratus.