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CONSERVATION, THE 5TH FUEL Conservation, energy, Lastest, News

Energy Day at the Market 12

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CONSERVATION, THE 5TH FUEL Conservation, energy, Lastest, News

Question by : Using energy conservation to find the maximum height?
A 65.0 kg skier approaches the foot of a hill with a speed of 16.0 m/s. The surface of this hill slopes up at 55.0 degrees above the horizontal and has coefficients of static and kinetic friction of 0.750 and 0.250, respectively, with the skis.

Use energy conservation to find the maximum height above the foot of the hill that the skier will reach.

Best answer:

Answer by TBT
initial KE
= 0.5 * 65 * 16^2 J

let h be the maximum height above the foot of the hill that the skier will reach

normal force due to weight
= 65 *g * cos 55
friction force
= 0.25 * 65 *g * cos 55
length travelled
= h /sin 55

final PE + work done due to friction
= 65 * g * h +0.25 * 65 *g * cos 55 * h /sin 55

65 * 9.81 * h + 0.25 * 65 *9.81 * cos 55 * h /sin 55 = 0.5 * 65 * 16^2
637.65 h + 111.59 h = 8320
h = 11.1 m —answer

Add your own answer in the comments!

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With the credit crunch biting, we need ways to save some pennies. So Ariel has put together a vodcast to show you the small changes that can be made around home with minimal expense, effort and time. Think you are too busy to be green? Think again, the five minute long vodcast will be full of tips that take no more that 15 minutes to implement with some only taking a minute or two. You can watch them on your way home and put them into practice by the time you go to bed! Ariel has also linked with the Energy Saving Trust to sponsor Thursday 23rd October as part of Energy Saving Week, a link which is in its third year demonstrating Ariels commitment to environmental issues. Energy Saving Week is an event, designed to drive energy usage down in the UK and to promote significant behaviour change amongst all of us. Crucial to this is making energy efficiency at home simple, easy and quick to implement.

Things You Should Know About Gas Saving Tips Are you tired of the continuing rise in gasoline price? If you are, you’re not alone. In this video, you’ll find a few excellent tips designed to help you save a bit of your hard earned money. First, its always best to purchase your gas either first thing in the morning or late at night. The reason for this is because gas is denser at a cold temperature, so you’ll basically be getting more for your money. Secondly, check your local gas prices to find the best price available. You can check your local gas prices online as well, which will prevent you from wasting gas while driving around to look for the best price. Third, by keeping your car well maintained, you can help improve fuel consumption. By simply tuning your car,you can decrease your fuel consumption by up to 20 percent. Also, you should keep your tires properly inflated and aligned. Tires that are under inflated will cause fuel consumption to increase by 6 percent. You should also make sure that you change your oil and air filters on a regular basis as well. Other tips to keep in mind are to drive by staying in the posted speed limits, as the faster you drive you will use more fuel. Whenever possible you should use overdrive, as this will help fuel and also improve the wear on your engine. You can also combine your errands by making a list of things that you have to do, as the more you cold start your engine, the more fuel you’ll be using. By taking the time to do …

CONSERVATION, THE 5TH FUEL EASY, energy, Joanna, making, saving, Yarrow

In this video, which is narrated in Spanish, you’ll learn tips for conserving energy. NES’ Tim Hill demonstrates a few quick and easy ways to save money on your electric bill, including insulating your water heater, outside doors and windows. For more energy-saving tips, visit www.nespower.com.
Video Rating: 4 / 5

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A few nice CONSERVING ELECTRICITY images I found:

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Check out these CONSERVING ELECTRICITY images:

Gullfoss

Image by big-ashb

Gullfoss

Image by big-ashb

CONSERVATION, THE 5TH FUEL Gullfoss

Energy Conservation for kids, Horizon Utilities Corporation, ON, Canada
Video Rating: 5 / 5

CONSERVATION, THE 5TH FUEL 'Water, Conservation, energy, kids, usage

CONSERVATION, THE 5TH FUEL Conserving, electricity, Lastest, News

CONSERVATION, THE 5TH FUEL Conserving, electricity, Lastest, News

Check out these ENERGY CONSERVATION images:

Philip McMaster, Andrew Thomson DSC_6014

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DSC_5927

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DSC_5930

Image by \!/_PeacePlusOne

CONSERVATION, THE 5TH FUEL Andrew, DSC_6014, McMaster, Philip, Thomson

A few nice CONSERVING ELECTRICITY images I found:

Sipapu Bridge, Natural Bridges NM 2

Image by Ken Lund

CONSERVATION, THE 5TH FUEL Conserving, cool, electricity, images

The Pentagon is accelerating its clean energy innovation to reduce risks to America’s military, enhance energy security and save money, according to a report released Sept. 21, 2011, by The Pew Charitable Trusts. As one of the largest energy consumers in the world, the Department of Defense has the ability to help shape America’s energy future. Their work is also helping to spur the growth of the clean energy economy.
Video Rating: 0 / 5

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Some cool CONSERVING ELECTRICITY images:

Gullfoss

Image by big-ashb

Gullfoss

Image by big-ashb

Gullfoss

Image by big-ashb

CONSERVATION, THE 5TH FUEL Conserving, cool, electricity, images

Kalikasan Kalingain, Kuryente Tipirin (Nurturing the Earth by Conserving Electricity): An Energy Conservation Campaign of the Rotaract Club of Timog (District 3780, Quezon City, Philippines). Goals: 1. To increase awareness on energy conservation and global warming and influence a change in behavior towards using electricity wisely. 2. To contribute in environment protection and easing the effects of global warming by decreasing energy consumption in schools and households.
Video Rating: 0 / 5

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Fundamentals of Physics, II (PHYS 201) The law of conservation of energy is reviewed using examples drawn from Newtonian mechanics. The work-energy theorem is derived from first principles and used to initiate a discussion of the vector calculus underlying the law of conservation of energy. Complete course materials are available at the Open Yale Courses website: open.yale.edu This course was recorded in Spring 2010.

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Some cool ENERGY CONSERVATION images:

IMG_1956: The Energy Detective

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DSC_5936

Image by \!/_PeacePlusOne

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this is a video made for a project on energy conservation. it is a pizza oven box. Bedok South Sec students.

Visit EnlightenVa.org to help bring Virginia out of the energy Dark Ages! Local residents of Fauquier and Prince William Counties discuss one simple change we can all make to reduce our energy consumption. Compact florescent bulbs use a quarter of the energy of a traditional incandescent light bulb. That helps your pocket book and the environment too! This ad is in response to Dominion Power’s plans to construct a new 500 kilovolt transmission line through the Shenandoah Valley and Northern Piedmont region of Virginia. Local organizations and county governments affected by the line have passed resolutions in opposition to Dominion’s Power’s plan, stating that we should conserve energy first before condemning people’s private property. Changing our light bulbs is just one simple first step you can take to make a difference. The second step you can take is to contact Governor Tim Kaine at (804) 786-2211 and tell him to make energy conservation a priority in Virginia. Act Now!
Video Rating: 5 / 5

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Energy Day at the Market 11

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Google’s Green Strategy Stumbles
Google, the Mountain View, CA-based internet search giant turned green enthusiast, is abandoning a fledgling campaign to convince home owners that conservation is cool by providing software that allowed them to monitor and manage energy consumption.
Read more on Forbes

Energy adviser: Sealed air ducts keep costs down
The best way for homeowners to achieve the highest energy efficiency and the greatest comfort from their home heating and cooling systems is to make sure ducts moving air throughout the house are property sealed. Heating and cooling can represent as much as half the electrical energy use of a house. For that reason, the Bonneville Power Administration offers a Performance Tested Comfort Systems …
Read more on The Columbian

CONSERVATION, THE 5TH FUEL Conservation, energy, Lastest, News

Energy Day at the Market 17

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Toilet maker promotes conservation during SC stops
Officials with a toilet maker are stopping in South Carolina to talk about the importance of water conservation. American Standard’s Responsible Bathroom Water Conservation Tour is stopping in West Columbia on Monday.
Read more on Erie Times-News

Vectren customers get energy-efficiency kits by completing online energy audits
To encourage customers to utilize the more detailed levels of the company’s online energy audit tool, Vectren is offering free energy efficiency kits while supplies last. The online energy audit uses…
Read more on Greencastle Banner-Graphic

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