Exam (elaborations)
PHYS 273 ULTIMATE QUESTIONS AND ANSWERS (Actual quiz 100% correct)
- Course
- PHYS 273
- Institution
- Concordia University Chicago
PHYS 273 ULTIMATE QUESTIONS AND ANSWERS (Actual quiz 100% correct)
[Show more]
Content preview
PHYS 273 ULTIMATE QUESTIONS ANDANSWERS 2023-2024(Actual quiz 100%
correct)
1. Energy is :
a) Power
b) A force of nature
c) Amount of momentum
d) The ability to do work
2. If you double the speed of an object how does its kinetic energy change?
a) Stays the same
b) It doubles
c) It triples
d) It quadruples
3. Which of the following could NOT be a unit of power?
a) Joules per second
b) Watts
c) Calories per hour
d) Joules
4. Home appliances that produce heat tend to be low power.
a) True
b) False
5. A process that occurs spontaneously in one direction is called
a) Reversible
b) Irreversible
c) Undeniable
d) Insatiable
6. Only a small percentage of the electricity we use in produced by converting
mechanical energy into electrical energy
,a) True
b) False
,7. Most countries depend on fossil fuels for more than 50% of their energy
needs.
a) True
b) False
8. Energy use per person is much higher
a) In highly developed countries
b) In less developed countries
9. In which hemisphere are most of the known coal reserves found?
a) Northern
b) Southern
c) It is approximately equal
10. There hasn't been a major mining accident in canada since the 1970’s
a) True
b) False
11. Light intensity is
a) The energy of the light on some area
b) The momentum of a light wave
c) The total energy of all the light captured
d) The power divided by the area over which the light shines
12. A flat plate collector is similar to the small solar panel in a calculator and
takes the sun’s energy and turns it into usable electricity.
a) True
b) False
13. In the future with better engineering we could have propellor style
windmills with efficiencies of up to 75%
a) True
b) False
, 14. Canada is one of the top 3 countries in terms of total power produced by
wind
a) True
b) False
15. Spent nuclear fuel has been used up and therefore is no longer radioactive.
a) True
b) False
16. The total fraction of energy generated by nuclear power worldwide is
predicted to increase by 2040.
a) True
b) False
17. A good home insulation will not be good at transferring heat.
a) True
b) False
18. The standard that certifies energy efficient products is called
a) Energy star
b) Green star
c) Canadenergy
d) GreenLite
19. What compound is produced by incomplete combustion of fossil carbon?
a) CO2
b) CO
c) NO2
d) N2
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 Wiseman. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for CA$25.87. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
66579 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now