Answer:
Step-by-step explanation:
I can't give you a direct answer, but i know something that might help
Answer:
a) How much work has he done = dW = 1.3 × 105 J
b) What is the magnitude of the heat that he has lost = dQ = -5.4 × 105 J
Step-by-step explanation:
- From the first law of thermodynamics; dQ = dU + dW
Hence, work done dW = dQ - dU
dW = -6.7 × 105 J - ( -8.0 × 105 J)
dW = 1.3 × 105 J is the work done by the player
- for heat lost; from dQ = dW + dU
- dU = -8.0 × 105 J and dW = 2.6 × 105 J
- heat lost dQ = 2.6 × 105 J + ( -8.0 × 105 J)
- The negative is as a result of heat lost by the player
Answer:
2.3,2.03,2.003
Step-by-step explanation:
i need points
Answer:
-14/25
Step-by-step explanation:
Remember i^2 = -1. Otherwise, the math is the same as for any polynomials.
![\dfrac{3-4i}{3+4i}+\dfrac{3+4i}{3-4i}=\dfrac{(3-4i)(3-4i)+(3+4i)(3+4i)}{(3+4i)(3-4i)}\\\\=\dfrac{(9-24i-16)+(9+24i-16)}{9+16}=\boxed{-\dfrac{14}{25}}](https://tex.z-dn.net/?f=%5Cdfrac%7B3-4i%7D%7B3%2B4i%7D%2B%5Cdfrac%7B3%2B4i%7D%7B3-4i%7D%3D%5Cdfrac%7B%283-4i%29%283-4i%29%2B%283%2B4i%29%283%2B4i%29%7D%7B%283%2B4i%29%283-4i%29%7D%5C%5C%5C%5C%3D%5Cdfrac%7B%289-24i-16%29%2B%289%2B24i-16%29%7D%7B9%2B16%7D%3D%5Cboxed%7B-%5Cdfrac%7B14%7D%7B25%7D%7D)