A person who weighs 550 N empties her lungs as much as possible and is then completely immersed in water (of density 1000 kg/m3) while suspended from a harness. Her apparent weight is now 21.2 N. What is her density?
A) 1050 kg/m3
B) 1040 kg/m3
C) 1030 kg/m3
D) 960 kg/m3
E) 56.1 kg/m3
Answer: B
Physics & Space Science
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If you were to fall into a black hole, the ________ would kill you by tearing you apart
Fill in the blank(s) with correct word
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Danny Diver weighs 500 N and steps off a diving board 10 m above the water. Danny hits the water with kinetic energy of
A) 10 J. B) 500 J. C) 510 J. D) 5000 J. E) more than 5000 J.
Physics & Space Science
A radioactive isotope of atomic number Z emits a beta-minus particle, and then the daughter nucleus emits a gamma ray. What is the atomic number of the resulting nucleus after both processes?
A) Z - 3 B) Z + 1 C) Z - 2 D) Z - 1
Physics & Space Science
During its early history, matter dominated the universe
Indicate whether the statement is true or false
Physics & Space Science