Physics, 02.12.2020 23:00 shacarabrown49
Carey crumpled a wad of paper and placed it in a large
glass jar. He recorded the total mass of the jar (including
the air in the jar), the paper, the lid, and a match.
Carey lit the match, quickly put it in the jar, and sealed
the lid. Most of the paper burned. He saw smoke in the jar
and black ashes left from the paper.
Which sentence best describes the total mass of the jar,
lid, paper, and match before burning compared with the
total mass after burning?
A The total mass after burning is greater.
B The total mass after burning is less.
C The total mass before and after burning is the same.
Answers: 1
Physics, 22.06.2019 16:50
Abird flies directly overhead from where you stand at an altitude of 300.0 m and at a speed horizontal to the ground of 20.0 m/s. the bird has a mass of 2.0 kg. the radius vector to the bird makes an angle \thetaθ with respect to the ground. the radius vector to the bird and its momentum vector lie in the xyxy-plane. what is the bird’s angular momentum about the point where you are standing?
Answers: 2
Physics, 22.06.2019 23:00
The gun from the crime scene shows tool marks where the serial numbers are ground off. there are also tool marks on the bullets left behind. what information can the tool marks on the bullets and gun provide about the crime? what type of evidence does this information provide, individual or class?
Answers: 1
Carey crumpled a wad of paper and placed it in a large
glass jar. He recorded the total mass of the...
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