Need some help with physics questions fast

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ghost12

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#1  Edited By ghost12
Member since 2016 • 33 Posts

Q1(belongs to vectors)

A=3i-2j+5k and B=2i-2j-2k then find A.B(dot product) also calculate the angle between these vectors

Q2) A progressive wave y =0.2sin 2 pie(t/0.5-x/20)m is travelling in a medium find the periodic time and wavelength of the wave

I am posting these questions here because nobody is answering me on any other fourm thanks in advance

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Hallenbeck77

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#2 Hallenbeck77  Moderator
Member since 2005 • 16892 Posts

Sorry--posting items asking for homework help isn't allowed.