27 Mar
2010
solar motion lights
Oceana : merkaba the Motion Picture Expanded Addition Chapter 15
Satellite motion in physics? How to solve this problem?
r1 d1 = x R2 x D2 T1 ^ 2/r1 ^ 3 = r2 ^ 2/r2 ^ 3 = 4pi ^ 2 / G (Mcentral) r ^ 3 = t ^ 2 x G x Mcentral / Fg 4pi ^ 2 = G x m1 x m2 / r ^ 2 Acentripetal = G x M / r ^ 2 = v ^ 2 / rv = sqrt (G x M / R) Can use any of these ways to resolve this? And please explain. A new solar system has been Stay discovered around Epsilon Eridani, about 10.5 light years away from Earth. There are 2 known planets orbiting the star. One is about 1.5 times the size of Jupiter with an orbital period of 6.85 years and the earth orbital radius of about 2.2 AU (astronomical unit = distance from Earth to our sun). If the other is about the size of Neptune, and has an orbital period of 2.6 years, what is its orbital radius?
The sizes are irrelevant. The answer is entirely in R ^ 3 = t ^ 2 x G x Mcentral / 4pi ^ 2 which is Kepler's third law. For the first planet that reads 2.2 ^ 3 = 6.85 ^ 2 GM/4pi ^ 2 * F where F is a constant factor that allows you to make your units consistent (I used astronomical units and year and time will not work if expressed M and G units Yes, but F is responsible for that and need not be calculated) for the planet that you have r ^ 3 = 2.6 ^ 2 GM/4pi ^ 2 * F so as to divide the whole of the constant drop out and we get: r ^ 3/2.2 ^ 3 = 2.6 ^ 2/6.85 ^ 2 or = 2.2 * cubicrootof (2.6 ^ 2/6.85 ^ 2) = 1.15 AU
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![]() Apex Xepa Solar-Powered LED Light with Motion Detection List Price: Sale Price: $70.99 You save: $9.00 (11%) Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product DescriptionUse in and around your house, apartment, courtyard, garage, shed, boat, RV, barn and other areas where an AC outlet is not accessible Detaches from its wall plate for portable use Solar Floodlight/Spotlight Includes Rechargeable Battery Made of Polycarbonate LED Light 15 yr. Life Span, Motion-Activated Design, Solar Panels Charge by Day, Turn on Automatically at Night Weather Resistant Construction No Wiring Required Solar Light: 7.3Wx4Dx15.5H; Solar Panel: 7Wx2.3Dx7.5H " Features
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![]() Motion Activated Solar Powered Led Light List Price: Sale Price: $39.00 You save: $43.99 (53%) Eligible for free shipping!Availability: Usually ships in 1-2 business days See Reviews For This Product DescriptionThe solar charging panel harnesses the sun's energy and charges the battery with no electricity use. Advanced digital technology provides up to 14 hours of continuous illumination, when fully charged with 2-3 days direct sun exposure. The solar charging panel has 15 ft / 4.5 m cable allowing you to install and position it for maximum sun exposure. The motion sensor duration and sensitivity is adjustable, and a switch allows for on, off and auto mode. Easily mounted using the brackets included. The light can be removed from the bracket for hand-held use. Features
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![]() Designers Edge L-949 10 LED Rechargeable Solar Panel Shed Light Model List Price: Sale Price: $24.67 You save: $3.32 (12%) Eligible for free shipping!Availability: Usually ships in 24 hours See Reviews For This Product DescriptionBring light to your dark shed, without having to connect to your local power grid. This LED shed light features 10 bright LED's that are powered via a solar panel. The panel can be placed in direct sunshine with the included 20-foot extension cord. Mount the light on the ceiling or wall for maximum flexibility, or use it as a utility light for a work bench. A pull chain allows easy on and off. A switch on the body lets you select between 10 LED's that last 2 hours, or 5 LED's that last 4 hours. The LED's have an average rated life of 100,000 hours, ensuring years of continuous use. The solar panel has a glass cover for protection in wet locations. Includes three AA rechargeable batteries and all mounting hardware. This fixture is approved for damp location use as defined by the National Electric Code. Please consult your local electrical code for details. DL # 274093. Features
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![]() Smarthome 740121 Solar Powered Motion Sensor Light List Price: Sale Price: $44.04 You save: $35.95 (45%) Eligible for free shipping!Availability: Usually ships in 24 hours See Reviews For This Product Features
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