Answer:
67.1 atm
Explanation:
From Dalton's law of Partial Pressures, the total partial pressure equals the sum of the individual partial pressures.
P = P₁ + P₂ + P₃
P₁ = 38.39 atm of O₂
P₂ = 3.38 atm of He
P₃ = 25.33 atm of N₂
So, P = P₁ + P₂ + P₃ = 38.39 atm + 3.38 atm + 25.33 atm = 67.1 atm
17 Sin (45) in the vertical and 17 Cos
(45)
Answer: option B. a car driving on a straight freeway at 60 miles.
Explanation:
A balance forces are said to act on an object when net force on an object is zero and the object is either at rest or moves with constant speed without changing direction.
In option A, C, and D the objects are changing direction during their motion. In option B, a car moves on a straight freeway in a single direction at constant speed of 60 miles per hour. Hence, the correct demonstration of balanced forces is by option B.
(18 gallon/tank) x (23 mile/gallon) = <em>414 mile/tank</em>
If the efficiency is 30%, then 30% of the work you put into it comes out
in the form of useful work, and the other 70% turns into forms of energy
that you can't use to do the job ... like heat.
30% of 560 J = 168 J (B)
