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Author Question: A metallic sheet has a large number of parallel slits, 5.0 mm wide and 20 cm apart. This sheet is ... (Read 57 times)

Sufayan.ah

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on: Jul 29, 2018
A metallic sheet has a large number of parallel slits, 5.0 mm wide and 20 cm apart. This sheet is used as a grating for microwaves.
 
  A wide parallel beam of microwaves is incident normally on the sheet. If the microwave wavelength is 6.0 cm, what is the largest angle from the normal, at which an intensity maximum occurs?
  A) 64
  B) 69
  C) 74
  D) 79
  E) 84

Question 2

A crane lifts a 2500-kg beam using a steel cable whose mass per unit length is 0.650 kg/m. What is the speed of transverse waves on this cable if the upward acceleration of the beam is a steady 3.00 m/s2?
 
  A) 194 m/s
  B) 578 m/s
  C) 1220 m/s
  D) 1880 m/s
  E) 222 m/s
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triiciiaa

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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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Sufayan.ah

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Reply 2 on: Jul 29, 2018
Excellent

Dinolord

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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