College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Question 1
When we study fluids, we'll encounter an equation known as
Bernoulli's equation, given below.
P + pv + pgYı = P2 + pv + pgy2-
If P = P2 = 101325 standard units, p = 1000 standard units,
v1 = 22.0 standard units, Y1 =1.65 standard units, 42 =4.44
standard units, and g = 9.81 standard units, what is v2?
Give your answer to an accuracy of 0.1 standard units,
Question 2
Now lets imagine we're solving a problem with the same system,
using the same equation as before:
P+ pui + pgyi = Pz + 슬pu을 + pgy.-
Again P = P2 = 101325 standard units, p = 1000 standard
units, and g = 9.81 standard units. But now imagine that v1 =
8.84 standard units, y1 =0.553 standard units, and y2 = 3.73
standard units. What is v2 now?
Give your answer to an accuracy of 0.01 standard units.
Note that if you worked the last problem to the end symbolically
before plugging in any numbers, like I told you to do in class, you
don't have to solve the problem again - you just have to plug in
the new numbers. This kind of thing comes up a lot in science.
Let this be a lesson to you to always solve problems symbolically
before plugging in numbers. Being able to re-use solutions is just
one of many reasons why you should always wait until the end to
plug in numbers.
Question 3
We will find out later in the course that when an ideal gas
undergoes something known as an adiabatic compression, the
initial and final volume and temperatures are related by the
equation
-
If P = 105,076 standard units, P; = 153,262 standard units,
T; = 316 standard units, and y = 7/5, what is T† ?
Give your answer in standard units with a precision of 1 standard
unit.
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Transcribed Image Text:Question 1 When we study fluids, we'll encounter an equation known as Bernoulli's equation, given below. P + pv + pgYı = P2 + pv + pgy2- If P = P2 = 101325 standard units, p = 1000 standard units, v1 = 22.0 standard units, Y1 =1.65 standard units, 42 =4.44 standard units, and g = 9.81 standard units, what is v2? Give your answer to an accuracy of 0.1 standard units, Question 2 Now lets imagine we're solving a problem with the same system, using the same equation as before: P+ pui + pgyi = Pz + 슬pu을 + pgy.- Again P = P2 = 101325 standard units, p = 1000 standard units, and g = 9.81 standard units. But now imagine that v1 = 8.84 standard units, y1 =0.553 standard units, and y2 = 3.73 standard units. What is v2 now? Give your answer to an accuracy of 0.01 standard units. Note that if you worked the last problem to the end symbolically before plugging in any numbers, like I told you to do in class, you don't have to solve the problem again - you just have to plug in the new numbers. This kind of thing comes up a lot in science. Let this be a lesson to you to always solve problems symbolically before plugging in numbers. Being able to re-use solutions is just one of many reasons why you should always wait until the end to plug in numbers. Question 3 We will find out later in the course that when an ideal gas undergoes something known as an adiabatic compression, the initial and final volume and temperatures are related by the equation - If P = 105,076 standard units, P; = 153,262 standard units, T; = 316 standard units, and y = 7/5, what is T† ? Give your answer in standard units with a precision of 1 standard unit.
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