Physics, 09.12.2019 02:31 brittany1903
What units are used when describing the length of time that the universe has been expanding? (could possibly be multiple)
billions of years
millions of years
light years
light year kilometers
decades
Answers: 1
Physics, 22.06.2019 12:40
Question part points submissions used suppose that 2 j of work is needed to stretch a spring from its natural length of 26 cm to a length of 36 cm. (a) how much work is needed to stretch the spring from 28 cm to 32 cm? (round your answer to two decimal places.)
Answers: 2
Physics, 22.06.2019 13:10
The atoms in a nickel crystal vibrate as harmonic oscillators with an angular frequency of 2.3 ร 1013 rad/s. the mass of a nickel atom is 9.75 ร 10-26 kg. what is the difference in energy between adjacent vibrational energy levels of nickel? (h = 6.626 ร 10-34 j โข s, , 1 ev = 1.60 ร 10-19 j)
Answers: 2
Physics, 22.06.2019 16:30
When conducting an investigation to determine which type of fertilizer produces the most flowers on a plant, which variable would be graphed on the x-axis once you collected the data? a. type of fertilizer b. amount of flowers c. amount of water d. number of days that the plants grew
Answers: 1
Physics, 22.06.2019 16:30
In a classical model of the hydrogen atom, the electron moves around the proton in a circular orbit of radius 0.053 nm. what is the electron's orbital frequency? what is the effective current of the electron?
Answers: 3
What units are used when describing the length of time that the universe has been expanding? (could...
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