Answer:
2.455 W
Explanation:
The power dissipated in each branch is ...
P = V^2/R
So, the branch powers are ...
branch 1: 18^2/220 ≈ 1.473 W
branch 2: 18^2/330 ≈ 0.982 W
Total power is ...
1.473 W + 0.982 W = 2.455 W
Answer:
The question is incomplete, the complete question is:
Which of the following is not a reason to give yourself extra "cushion" when driving?
A. Poor visibility B. Poor road conditions C. Inclement weather D. None of these.
The correct answer is D. None of these.
Explanation:
All the options are not reasons to give yourself an extra cushion when driving, rather they are reasons that are not favorable to driving at all.
A cushion is a certain amount of distance you are supposed to keep between you and the car in front of you to allow easy maneuvering in any condition.
A typical cushion is 3 seconds between you and the car in front of you, in less than perfect conditions like bad weather or poor road conditions an additional second must be added to it.
Answer:
Enthalpy, hsteam = 2663.7 kJ/kg
Volume, Vsteam = 0.3598613 m^3 / kg
Density = 2.67 kg/ m^3
Explanation:
Mass of steam, m = 1 kg
Pressure of the steam, P = 0.5 MN/m^2
Dryness fraction, x = 0.96
At P = 0.5 MPa:
Tsat = 151.831°C
Vf = 0.00109255 m^3 / kg
Vg = 0.37481 m^3 / kg
hf = 640.09 kJ/kg
hg = 2748.1 kJ/kg
hfg = 2108 kJ/kg
The enthalpy can be given by the formula:
hsteam = hf + x * hfg
hsteam = 640.09 + ( 0.96 * 2108)
hsteam = 2663.7 kJ/kg
The volume of the steam can be given as:
Vsteam = Vf + x(Vg - Vf)
Vsteam = 0.00109255 + 0.96(0.37481 - 640.09)
Vsteam = 0.3598613 m^3 / kg
From the steam table, the density of the steam at a pressure of 0.5 MPa is 2.67 kg/ m^3
Answer:
Explanation:
The mass inside the rigid tank before the high pressure stream enters is:
The final mass inside the rigid tank is:
The supplied air mass is:
Answer:
a. $79,122.50
b. 314. 84 miles.
c. 700 ways.
Explanation:
a. Compound interest = A = P (1 + r/n)nt ;
where P = 7500 (principal amount)
r = 15% (interest rate)
t = 16 (no of years)
n = 4 (no of times compounded annually.)
and finally A is the Amount (present value after 16 years)
Upon calculation A = $79,122.50.
b. Answer: 314. 84 miles.
Explanation:
Given data. 160 miles / 7.75 liters of gasoline
Therefore 1 liter of gasoline = 160/7.75 = 20.645 miles/ liter.
15.25 liters of gasoline = 20.645 * 15.25 = 314.84 miles.
c. Answer: 700 ways.
Explanation:
This is an application of generalized principle of counting.
4 Americans can be choosen from 7 Americans = 7C4 = 35
3 Russians can be choosen from 6 Russians = 6C3 = 20.
Total number of ways = (7C4)* (6C3) = 35 * 20 = 700 ways.
