Physics, 20.11.2019 05:31 msitez2442
Ahammer taps on the end of a 3.8-m-long metal bar at room temperature. a microphone at the other end of the bar picks up two pulses of sound, one that travels through the metal and one that travels through the air. the pulses are separated in time by 8.80 ms . what is the speed of sound in this metal?
Answers: 2
Physics, 21.06.2019 19:30, ggdvj9gggsc
A500g object falls off a cliff and losers 100 j from its gravitational potential energy store. if the gravitational field strength g=9.8n/kg, how high is the cliff?
Answers: 1
Physics, 21.06.2019 21:20, mmaglaya1
Which of the following explains why it took so long for the public to accept the negative health effects of smoking? a)people were waiting for counter reasons, and those were presented. b)scientists had not completely finalized their results, which took 30 years. c)cigarettes were cheaply available and media channels were very inefficient. d)cigarette manufacturers were trying hard to bring an alternative into the market
Answers: 3
Physics, 22.06.2019 10:00, sofiaisabelaguozdpez
Two objects of different mass start from rest, are pulled by the same magnitude net force, and are moved through the same distance. the work done on object 1 is 900 j. after the force has pulled each object, object 1 moves twice as fast as object 2. how much work is done on object 2?
Answers: 1
Ahammer taps on the end of a 3.8-m-long metal bar at room temperature. a microphone at the other end...
Social Studies, 29.05.2020 02:02
Social Studies, 29.05.2020 02:02