The waves going to the right from antenna 1 and 2 are D_(1,R)=A sin⁡(kx-ωt) D_(2,R)= A sin⁡〖(k(x-L)-ωt+ϕ_2,0)〗 Write down the sum of the two waves 〖D_(net, R)= D〗_(1,R)+D_(2,R )and the phase difference Δϕ_R= ϕ_2- ϕ_1 between the two waves. On section 17.6 of the book where you will find the trigonometric identity:

If this plastic cup is heated to its melting point, what will eventually happen to all the particles in the plastic? a. the particles will begin to move enough that they slide past each other. b. bonds will form and the liquid will become a solid. c. the spaces between the particles will get smaller. d. the particles will change state and become a crystalline solid.

Talia is manufacturing rolls of wire for hanging pictures. she needs a material that is so that it can easily be pulled into wire without breaking.

The total amount of energy contained in an object