Physics, 06.06.2021 16:40, antionette1
A make up box which is cuboidal in shape has dimensions 3.042 m x 1.234 m x 0.017 m. if th mass of the box is 2.123 kg then its density ( correct to its significant figures)?
a) 33.26 kg m ^-3
b) 33.268 kg m^-3
c) 33 kg m^-3
d) 33.2 kg m^-3
Answers: 2
Physics, 22.06.2019 13:10, pearlvldz
The atoms in a nickel crystal vibrate as harmonic oscillators with an angular frequency of 2.3 × 1013 rad/s. the mass of a nickel atom is 9.75 × 10-26 kg. what is the difference in energy between adjacent vibrational energy levels of nickel? (h = 6.626 × 10-34 j • s, , 1 ev = 1.60 × 10-19 j)
Answers: 2
Physics, 23.06.2019 00:00, jazminemendezhidalgo
If water vapor with the mass of 35.0 grams is cooled and condensed into water in a closed system such as a closed glass jar, what is the mass of the water after the water vapor completely condenses? a) 34.5 grams b) 35.0 grams c) 35.5 grams d) the mass cannot be determined without knowing the volume
Answers: 2
A make up box which is cuboidal in shape has dimensions 3.042 m x 1.234 m x 0.017 m. if th mass of t...
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