About 15% by mass of Earth's core is composed of the element(s)
a. iron
b. nickel
c. oxygen.
d. silicon.
e. iron and nickel.
b
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Assume a proton in a 1-dim box of width 3.0 fm is in its 1 st excited state
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Which is greater, the buoyant force that acts on an elephant, or on a helium-filled party balloon? Explain why the balloon rises in air and the elephant doesn't
What will be an ideal response?
A spring-loaded dart gun is used to shoot a dart straight up into the air, and the dart reaches a maximum height of 24 meters
The same dart is shot up a second time from the same gun, but this time the spring is compressed only half as far (compared to the first shot). How far up does the dart go this time (neglect all friction and assume the spring is ideal)? A) 6.0 m B) 12 m C) 3.0 m D) 48 m
A derived unit
a. involves only length. b. is a combination of units. c. applies only to density. d. is not found in the metric system.