Iwill give brainliest
select all that are true about sound waves:
group of answer choi...
Physics, 21.01.2020 07:31 guardhic7165
Iwill give brainliest
select all that are true about sound waves:
group of answer choices
sound waves travel faster through the air than the through the ocean.
sound waves travel faster through more dense mediums.
sound waves cannot travel through a vacuum.
sound waves travel faster through the ground than they do the air.
sound waves travel slower through more dense mediums.
sound waves do not have to have a medium to travel.
Answers: 2
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What is the relationship between the wavelength of a wave and it's energy?
Answers: 1
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Plss anybody know how to do this? ? i need the answers from a through d
Answers: 1
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The astronauts on the space shuttle flights experienced an acceleration of 29 m/s2 (about 3 "g's") during lift-off. what upward force must the astronaut's seat apply to the astronaut in order to cause this acceleration? assume the astronaut's mass is 70 kg, and compute this force when the acceleration is near the earth's surface so their weight equals latex: mg m g .
Answers: 3
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In the future, people will only enjoy one sport: electrodisc. in this sport, you gain points when you cause metallic discs hovering on a field to exchange charge. you are an electrodisc player playing the popular four disc variant. the disks have charges of qa = −8.0 µc, qb = −2.0 µc, qc = +5.0 µc, and qd = +12.0 µc. (1) you bring two disks together and then separate them. you measure the resulting charge of these two disks and find that it is +5.0 µc per disk. which two disks did you bring together? (a) a and b (b) a and c (c)a and d (d)b and c(e) b and d (f) c and d. (2) you bring three disks together and then separate them. you measure the resulting charge of these three disks and find that it is +3.0 µc per disk. which three disks did you bring together? a, b, and c (a) a, b, and d (c) a, c, and d (d) b, c, and d. (3) given the resulting charge of each disk measured in (b) is +3.0 µc, how many electrons would you need to add to a disk of this charge to electrically neutralize it? electrons
Answers: 3
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