Exam (elaborations)
Exam 2 Lon Capa Questions And Answers With Verified Solutions Already Passed!!!
- Course
- Institution
Exam 2 Lon Capa Questions And Answers With Verified Solutions Already Passed!!!
[Show more]
Seller
Follow
Content preview
Exam 2 Lon Capa Questions AndAnswers With Verified Solutions Already
Passed!!!
According to the definition of work, pushing on a rock accomplishes no work
unless there is:
Answer: movement
When you do work on something, you give it energy:
Answer: A. always
No work is done by gravity on a bowling ball:
Answer: A. the gravitational force on the ball is not in the same direction that
it moves
A 1000-kg car and a 2000-kg car are hoisted to the same height above the
ground. Raising the more massive car requires:
Answer: D. twice as much work.
Which task requires more work?
Answer: C. both require the same work.
The unit kilowatt-hour is a unit of:
Answer: C. energy
You are carrying groceries up the stairs to your apartment. If you had made
the same trip in half the time, you would have expended:
Answer: D. twice as much power.
What is the difference between energy and power?
Answer: C. Power is the rate at which energy is used, so its units are a unit of
energy divided by a unit of time
A book is sitting on the edge of a tall shelf. As it begins to fall its "a_" is
changed to "b_":
Answer: a. gravitational potential energy, b. kinetic energy
A block is compressed against a spring and speeds off when released. As this
happens, "a_" is changed to "b__":
, Answer: a. spring potential energy, b. kinetic energy
In the core of the Sun, nuclear fusion reactions convert "a_" into "b_":
Answer: a. nuclear energy, b. radiant energy
When Joshua applies the brakes to stop his speeding bicycle, the brake pads
change "a_" into "b__":
Answer: a. kinetic energy, b. thermal energy
A roller coaster coasts up a hill and slows down as "a__" is changed into
"b_":
Answer: a. kinetic energy, b. gravitational potential energy
An object has gravitational potential energy due to its:
Answer: D. location.
Relative to an initial height, an object raised twice as high has gravitational
potential energy that is:
Answer: D. twice as much
An iron cannonball and a tennis ball are dropped at the same time from the
top of a building. Ignoring air resistance, at the instant before the balls hit the
sidewalk, the heavier cannonball has greater:
Answer: C. kinetic energy
Two identical golf carts move at different speeds. The faster cart has twice the
speed and therefore has:
Answer: C. four times the kinetic energy.
A melon is tossed straight upward with 100 J of kinetic energy. If air
resistance is negligible the melon will return to its initial level with a kinetic
energy of:
Answer: B. 100 J
Which requires the most amount of work by the brakes of a car?
Answer: B. slowing down from 70 km/h to a stop
To impress his friends while riding on a carnival Ferris wheel, Prankster Paul
gets out of his chair and climbs along the spoke of the wheel toward its center
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 unstoppable. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $15.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
51292 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 15 years now