Compute the rms value of the following periodic voltage waveform and then calculate the real power that would be absorbed by a 120Ω resistor if this voltage waveform was placed across it. Show your work carefully.

v (t) V
↑ 10ₑ⁻ᵗ
10 │ ↙
│ ╲ │ ╲ │ ╲
│ ╲ │ ╲ │ ╲
│ ╲ │ ╲ │ ╲
│__________,___________,____________> t (s)
0 1 2