New User Special Price Expires in

Let's log you in.

Sign in with Facebook


Don't have a StudySoup account? Create one here!


Create a StudySoup account

Be part of our community, it's free to join!

Sign up with Facebook


Create your account
By creating an account you agree to StudySoup's terms and conditions and privacy policy

Already have a StudySoup account? Login here


by: Surge Ace


Surge Ace


Preview These Notes for FREE

Get a free preview of these Notes, just enter your email below.

Unlock Preview
Unlock Preview

Preview these materials now for free

Why put in your email? Get access to more of this material and other relevant free materials for your school

View Preview

About this Document

These notes are notes I took as an elite notetaker during physics classes. I took notes of mostly the example that the teacher gave. Hope you learn and enjoy. Surge
Class Notes
Physics, efficiency, and, power
25 ?




Popular in

Popular in Department

This 1 page Class Notes was uploaded by Surge Ace on Monday October 17, 2016. The Class Notes belongs to at A-Technical College taught by in Fall 2016. Since its upload, it has received 4 views.


Reviews for Physics


Report this Material


What is Karma?


Karma is the currency of StudySoup.

You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!

Date Created: 10/17/16
Notes during Physics; Efficiency and power Efficiency Efficiency (η) = Useful energy input/Energy output (energy consumed) Efficiency of a car Average, 1 L gasoline delivers 34 MJ energy, only 8.5 MJ are useful. For example Ideally you would ride for 80 km but in fact, you only ride for 20 km, this is due to friction, air resistance, and other variables. Because of this our cars are not 100% efficient, and with modern day calculations, physicists have calculated that it is impossible to have a car with 100% efficiency. Percentage of efficiency of average gasoline car Using the equation to solve this problem we got: 25% average efficiency for a gasoline car. Power Power = Work done/Time taken Example If we took two men, a very young athlete and an old man. Both men have the same mass: 70 kg. Both are walking up the stairs, stairs are 3 metres high, young man climbs them in three seconds while the old man climbs them in 5 minutes. Calculate work done Work done = Force (Newtons) Distance * * =multiply Force of both men= 700 Newtons Distance= 3 metres Work done= 2100 Joules Time taken Young man=3 seconds Old man= 5 minutes=5*60 seconds=300 seconds Power of old man vs power of young man Power of Young man = 2100 Joules/3 seconds = 700 Watts Power of young man = 2100 Joules/300 seconds = 7 Watts Conclusion The young man has delivered more power than the young man


Buy Material

Are you sure you want to buy this material for

25 Karma

Buy Material

BOOM! Enjoy Your Free Notes!

We've added these Notes to your profile, click here to view them now.


You're already Subscribed!

Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'

Why people love StudySoup

Steve Martinelli UC Los Angeles

"There's no way I would have passed my Organic Chemistry class this semester without the notes and study guides I got from StudySoup."

Allison Fischer University of Alabama

"I signed up to be an Elite Notetaker with 2 of my sorority sisters this semester. We just posted our notes weekly and were each making over $600 per month. I LOVE StudySoup!"

Jim McGreen Ohio University

"Knowing I can count on the Elite Notetaker in my class allows me to focus on what the professor is saying instead of just scribbling notes the whole time and falling behind."


"Their 'Elite Notetakers' are making over $1,200/month in sales by creating high quality content that helps their classmates in a time of need."

Become an Elite Notetaker and start selling your notes online!

Refund Policy


All subscriptions to StudySoup are paid in full at the time of subscribing. To change your credit card information or to cancel your subscription, go to "Edit Settings". All credit card information will be available there. If you should decide to cancel your subscription, it will continue to be valid until the next payment period, as all payments for the current period were made in advance. For special circumstances, please email


StudySoup has more than 1 million course-specific study resources to help students study smarter. If you’re having trouble finding what you’re looking for, our customer support team can help you find what you need! Feel free to contact them here:

Recurring Subscriptions: If you have canceled your recurring subscription on the day of renewal and have not downloaded any documents, you may request a refund by submitting an email to

Satisfaction Guarantee: If you’re not satisfied with your subscription, you can contact us for further help. Contact must be made within 3 business days of your subscription purchase and your refund request will be subject for review.

Please Note: Refunds can never be provided more than 30 days after the initial purchase date regardless of your activity on the site.