Physics, 16.01.2020 05:31, bobthebattlebot
Why would a person choose to tie a helium-filled balloon to a child's wrist instead of simply having the child hold on to it? a. helium is less dense than air, so it will float above air if the child lets go of the balloon. b. helium is more dense than air, so it will sink below air if the child lets go of the balloon. c. helium is less dense than air, so it will sink below air if the child lets go of the balloon. d. helium is more dense than air, so it will float above air if the child lets go of the balloon.
Answers: 1
Physics, 21.06.2019 18:00, hcortez8846
Which statement best explains why an object weight less on mercury than it does on earth
Answers: 1
Physics, 21.06.2019 22:30, tvrgrvJfbhh3881
Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.
Answers: 3
Physics, 22.06.2019 03:00, natasniebow
Which of the following harmful chemicals are found in tobacco smoke? a. carbon monoxide b. carbon dioxide c. nicotine b. carbon dioxide d. both a and c
Answers: 2
Why would a person choose to tie a helium-filled balloon to a child's wrist instead of simply having...
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