Exam (elaborations)
ENGR 103 EXAM 2 WITH COMPLETE SOLUTION
- Course
- Institution
ENGR 103 EXAM 2 WITH COMPLETE SOLUTION...
[Show more]
Content preview
ENGR 103 EXAM 2 WITHCOMPLETE SOLUTION
A pressure gauge reads 195 kPa. What is the absolute pressure at this point
in units of psi if the
local atmospheric pressure is 0.94 atm. - ANSWER 42.1 psi
A vacuum gauge connected to a tank reads 48 kPa at a location where
atmospheric pressure is 13.8
psi. What is the absolute pressure in units of kPa? - ANSWER 47.1 kPa
A force of 300 lbf is applied to the piston of a cylinder, compressing the gas
within the cylinder. The
piston has a radius on 15 in. If the local atmospheric pressure is 0.98 atm,
what is the absolute
pressure inside the cylinder in psi? - ANSWER 14.8 psi
The temperature of a mixture is raised from 30°C to 56°C. What is the
temperature change of the
mixture in units of °F, °R, and K? - ANSWER 26 K 46.8°F 46.8°R
If a mixture has a temperature change of 26K and has a specific heat of 4.912
kJ/kg-K, how much energy did it take to raise the temperature that amount?
Assume mass = 1 kg. - ANSWER 128 kJ
An object is dropped off a balcony and reaches a maximum speed of 45 ft/s
before hitting the
, ground. How high is the balcony above the ground? - ANSWER 31.4'
A 70 kg person is standing at the edge of a diving platform. The PE of the
person is 6800 J. If he
steps off the platform and freefalls, what is the velocity of the person right
before he hits the water? - ANSWER 13.9 m/s
A 165 lbm person climbs a stairway consisting of 160 stairs, each with a
vertical rise of 8 inches.
How much work does this person do against gravity? - ANSWER 17600 ft lb
A spring is compressed 2 inches from its at-rest position. The spring is then
compressed an
additional 3 inches. If the spring constant is 2600 N/cm, find the total work
done in compressing
the spring in units of kJ. - ANSWER 2100 J = 2.10 kJ
During a time interval of 1 hour, a heat engine absorbs 360 MJ of energy
from a high-temperature
source while rejecting 40 KW to a low-temperature sink. How much power
does the heat engine
produce? What is the thermal efficiency of the heat engine? - ANSWER Eff =
60% 60 kW
A heat engine absorbs 45 MW from a 252°C combustion chamber and rejects
22.0 MW to the
atmosphere at 32°C. Find the actual thermal efficiency and the Carnot
thermal efficiency of the
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Belina. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
67866 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now