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Author Question: If the force on an object is in the negative direction, the work it does on the object must be A) ... (Read 29 times)

justinmsk

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on: Jul 29, 2018
If the force on an object is in the negative direction, the work it does on the object must be
 
  A) negative.
  B) positive.
  C) The work could be either positive or negative, depending on the direction the object moves.

Question 2

A diffraction grating is to be used to find the wavelength of the emission spectrum of a gas. The grating spacing is not known, but a light of a known wavelength of 632.8 nm is deflected by 43.2 in the second order by this grating.
 
  Light of the wavelength to be measured is deflected by 34.9 in the second order. What is the wavelength of this light?
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DHRUVSHAH

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Reply #1 on: Jul 29, 2018
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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justinmsk

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Reply 2 on: Jul 29, 2018
Wow, this really help

xiazhe

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Reply 3 on: Yesterday
Gracias!

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