For the following 3 vectors A⃗ =2y^+3z^ B⃗ = 3 x^+2z^ C⃗ = 3 x^+3y^ Calculate the following: (a) A⃗ ⋅(B⃗ +C⃗ )= (b) D⃗ =A⃗ ×(B⃗ +C⃗ ) Dx= Dy= Dz= (c) A⃗ ⋅(B⃗ ×C⃗ )= (d) G⃗ =A⃗ ×(B⃗ ×C⃗ ) Gx= Gy= Gz=

Question

For the following 3 vectors   A⃗ =2y^+3z^   B⃗ = 3 x^+2z^   C⃗ = 3 x^+3y^   Calculate the following:   (a) A⃗ ⋅(B⃗ +C⃗ )=   (b) D⃗ =A⃗ ×(B⃗ +C⃗ )   Dx=   Dy=   Dz=   (c) A⃗ ⋅(B⃗ ×C⃗ )=   (d) G⃗ =A⃗ ×(B⃗ ×C⃗ )   Gx=   Gy=  Gz=

anonymous · Answer

a should be -2
A.B=-4-2a=0
a=-2

anonymous · Answer

The Young's modulus for a material is 2.0 x 1010 N/m2. The material is stretched to a strain of 5.0 x 10-3. How much elastic energy will be expended? (Express your answer in J/m3)