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, 22.06.2019 22:50, mdg5605
The illuminance of a surface varies inversely with the square of its distance from the light source. if the illuminance of a surface is 120 lumens per square meter when its distance from a certain light source is 6 meters, by how many meters should the distance of the surface from the source be increased to reduce its illuminance to 30 lumens per square meter?
Answers: 3
Physics, 23.06.2019 02:00, lyly214
Dc versus ac problem. suppose your dc power supply is set to 15 v and the vertical setting on the oscilloscope is at 5 v/div. how many divisions will the trace deflect if you connect the output of the power supply to the scope with the a input switch set on dc? how many divisions if the switch is on ac?
Answers: 3
Why would a person choose to tie a helium-filled balloon to a child's wrist instead of simply having...
Mathematics, 19.02.2021 02:20
Biology, 19.02.2021 02:20
English, 19.02.2021 02:20
Mathematics, 19.02.2021 02:20
Biology, 19.02.2021 02:20
Mathematics, 19.02.2021 02:20