Answer:
k_max = 31.82 w/mk
k_min = 17.70 w/mk
Explanation:
a) the maximum thermal conductivity is given as
where k_m is thermal conductvitiy of metal
k_p is thermal conductvitiy of carbide
v_m = proportion of metal in the cement = 0.17
v_p = proportion of carbide in the cement = 0.83
= 66*0.17 + 28*0.83
k_max = 31.82 w/mk
b) the minimum thermal conductivity is given as
= \frac{28+66}{28*0.17 +66*0.83}
k_min = 17.70 w/mk
With weather ballons carry instruments to measure the temperature ,pressure,wind direction and wind speed
Answer:
7557.875 J
Explanation:
Assumimg we need to find work done by the bullet on the gas
The work is found by integrating force over distance
W= 
For the force in this problem we have
= ![[14000x+10000x^2-21000x^3]_{0}^{0.65}](https://tex.z-dn.net/?f=%5B14000x%2B10000x%5E2-21000x%5E3%5D_%7B0%7D%5E%7B0.65%7D)
=7557.875 J
Answer:
I don't know this for sure, but I think its because they need to be able to sit in their seats without flying in the air.
Explanation:
