Answer:
The engine's thermal efficiency is 0.32
Explanation:
Thermal efficiency = work done ÷ quantity of heat supplied
Work done = 210 J
Quantity of heat supplied = work done + waste heat = 210 + 440 = 650 J
Thermal efficiency = 210 ÷ 650 = 0.32
The 95% confidence interval for the true proportion moth eggs parasitized by the wasps is;
CI = (0.5459, 0.7341)
We are given;
Sample size; n = 100
Number of successes in the sample; x = 64
Now, formula for estimated proportion of success is; p = x/n
p = 64/100
p = 0.64
Formula for confidence interval of proportions is;
CI = p ± z√(p(1 - p)/n)
Where z is the critical value at the confidence level.
From tables, at 95% CL, critical value z = 1.96
Thus;
CI = 0.64 ± 1.96√(0.64(1 - 0.64)/100)
CI = 0.64 ± 0.0941
Thus;
CI = (0.64 - 0.0941), (0.64 + 0.0941)
CI = (0.5459, 0.7341)
Read more about confidence interval at;brainly.com/question/17042789
Answer:
<em>thrust = ML</em>
<em> </em>
Explanation:
T = p
x 
Re
where D is diameter
p is the density
N is the revolution per second
Re is the Reynolds number which is equal to puD/μ
where p is the fluid density
u is the fluid velocity
μ is the fluid viscosity = kg/m.s = M
<em>Reynolds number is dimensionless so it cancels out</em>
<em />
diameter is m = L
speed is in m/s = L
fluid density is in kg/
= M
N is in rad/s = L =
combining these dimensions into the equation, we have
thrust = M
= M
<em>thrust = ML</em><em> </em> which is the dimension for a force<em> which indicates that thrust is a type of force</em>
