Kay D. Anderson

The soul would have no rainbow had the eyes no tears. John Vance Cheney

What is the gravitational acceleration at a distance of R/2 from a the center of a planet?

  1. Given that the radius of the first planet is R = 2.87 x 10^6m and M = 6.02 x 10^24 kg. The idea is the radius is reduced in half and we now have to calculate a new gravitational acceleration. I would appreciate the help on this... I don't even think it's necessarily a killer problem just stumped. Thanks!

    Answer by lunchtime_browser
    The gravitational force (F) between two masses (M and m) separated by a distance R is given by: F = GMm/R² When one of the masses (M) is a planet and the other mass (m) is a small object near the surface of the planet, we have a special name for that gravitational force: we call it the weight of m. Weight = mg where g is the acceleration due to gravity. So we can write: mg = GMm/R² m cancels out, leaving: g = GM/R² The rest is just plugging in the numbers. EDIT: Just reading your question again. It's not clear how the "new" planet comes about. The new radius, Rn, will obviously be R/2 = 1.435 * 10^6 m, but how is this being achieved? Is the same mass M being compressed into the smaller volume, so that the density of the smaller planet is increased, or is the planet just made up of less "stuff" than the first planet (but at the same density) in which case the new planetary mass Mn will be smaller: {Mn = M/8} ?

  2. W = F * delta r Just curious what lower case r stands for? It's beginning college physics to answer your question, I never took physics and high school. I don't care much for my professors teaching methods but that makes more sense so essentially all I'm looking at is a simple formula to measure the work based off of force and distance. I think I got it thank you for your input.

    Answer by †Archangel TJ†
    if it's high school physics. W = work. F = force , delta r = distance moved

  3. 8^2- r^2=r(8)+43 solve for r. I set it up like this, 64-r^2=8r+43 but I don't know how to solve for r since its squared. Please show the steps you took to get r=?

    Answer by Me
    64 - r^2 = 8r + 43 move all terms to 1 side r^2 + 8r - 21 = 0 use discriminant method to solve r = -4 +/-sqrt(37)

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Great Advice For Having Fun With Woodworking

When you have to make adjustments to your woodworking power tools or change saw blades on your power saws, be sure to unplug your tool. Do not simply trust the on/off switch to keep you safe. If the switch is activated while you are adjusting your power tool, you could be seriously injured or even killed. If you plan on applying any gloss or stain to a piece of wood, it is very important that you sand it down first. Failing to do this step will result in a wood surface that is not very smooth. Use sandpaper to smooth things down then make sure all dust s removed by brushing it with a cloth.It is important that you wear proper clothing for woodworking jobs. Your clothes should fit closely to avoid having loose ends caught up in spinning equipment. If you have long hair, be sure to secure it to avoid having it become tangled in saws, drills and so on. Do not wear loose, dangling jewelry while woodworking as this could cause severe injury if it gets caught Start Reading Whole Lot More Start Reading Whole Lot More

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If your employer offers retirement plans, take advantage of them! Contributing to a 401(k) plan can lead to lower taxes, and your employer may even contribute more on your behalf. As time goes on, compounding interest and tax deferrals on your plan will begin to accumulate, and you'll be saving even more.Begin by saving as much as you can. True, as time goes on you can save a little at a time and it will help, but you should start things off as health as possible. The more you invest to begin with, the more money you will earn over time. Regularly contribute to a 401k, and boost the employer's match if you can. This allows you to avoid some of the taxes that you will face in the future. If your employer matches your contributions, it is essentially like them giving free money to you. An obvious tip in regards to retiring is to make sure you start saving for your retirement. A lot of people make the mistake of not saving for their retirement and then Start Reading Whole Lot More

What kind of ? – Prevent Tooth Decay With These Dental Care Ideas

Go to your dentist twice a year, or whatever the recommendation for your particular situation is. Regular dentist visits will help prevent serious dental issues in the future. Also, you will be more comfortable with your dentist when you see him or her regularly. This could be comforting if the need for serious dental work ever arises.If your kids do not like the taste of mint, that doesn't mean they can't brush their teeth. There are many fun flavors to choose from. Pick up a product with a favorite flavor, as this will make it easier to tolerate. You may also be able to special order different flavors from a holistic store or pharmacy.Many people concern themselves with proper dental hygiene. You'll find information here that can help you have a healthy mouth. Keep smiling into your golden years with excellent oral health habits.If you think you can't take your dental procedure, talk with the dentist about signals for reassurance or a break. You may Start Reading Whole Lot More

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Always inspect your roof after a storm. You want to identify shingle damage as soon as you can to prevent leaks. Because of this, you need to inspect your roof. Just remember to use safety measures when climbing on your roof. Never wash your roof with the same pressure washer you use to clean the sides of your house. The high-powered water flow can reach right up under your roofing shingles and force them off! Even if it doesn't happen all at once, pressure washers will damage your roof, causing more problems for you than it solves. If you're looking into hiring a roofer, the first question you should ask is how long the company has been in business. Someone might sound great on paper, but if they're new to the game, they may still be ironing out kinks in their business practices. You don't want to be the one they test things out on. Since you're going up on your roof anyway to do work, clean the gutters while you're there. Sometimes a leak can actually Start Reading Whole Lot More

Useful Advice To Obtain Quick Eczema Relief

If you suffer from eczema, try not to sweat too much. Of course, certain sweating cannot be avoided. But, it is important to try to keep the skin cool. If you do sweat, say from a workout or a jog, be sure to take a shower as soon as you are done. Moisturize immediately following bathing. This is the best time to do it because your skin is still damp. Make sure to only pat dry your skin between showering and moisturizing. You don't want to remove any moisture that your skin has already absorbed; that is counterproductive to treating your eczema.Pay attention to your hands. Because you wash them throughout the day, they can get very dry and are prone to more eczema. If you are engaged in an activity that involves water, like washing the dishes, wear rubber gloves. This will help protect your skin from the water throughout the day. Know what your triggers are so you can avoid them. Your triggers may laundry detergent, soaps, and dust. You should probably Start Reading Whole Lot More

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Fresh smelling breath is an indicator of good oral hygiene. By properly caring for your teeth and gums, you eliminate sulfur compounds, which contain terrible odors. These odors come from the breakdown of bacteria and tooth matter inside of your mouth. Make sure you visit your dentist regularly. Dental issues that are not taken care of promptly can turn into future serious problems. Regular checkups prevent minor issues from turning into major dental problems. Visit your dentist every six months, at least.Any form of tobacco is the bane of oral health. Over time, these products cause irreparable damage to your gums and teeth, including oral cancer. Smokers and tobacco users should consult their dentist immediately if they notice any sores or ulcers in their mouth. If you know that you have a certain issue with your dental health, you should find a dentist that is an expert in that area. If they can't, they can generally refer you to one that can. If Start Reading Whole Lot More

Beautify Your Garden With These Excellent Landscaping Tips!

If you plan to landscape your yard, be sure to do a good amount of research on the best types of plants for your area. Some grasses grown better in warmer regions, while others can survive a tough winter with ease. The same can be true for various bushes and trees. You should know that the type of soil you have is an important factor for your landscape design. Be sure the plants you want to grow will thrive in your type of soil. If the soil in your yard does not support a variety of plants, you may wish to substitute another type or you may opt to build beds with wood chips or mulch products.If you are thinking about adding an outdoor kitchen, then consider using granite as your surface cover. There are many cheaper materials available, but they can be damaged by water, temperature fluctuations or having hot items placed upon them.If you want to add much color to your landscape, but you have a smaller budget, consider using wildflowers. The seeds for Start Reading Whole Lot More

My own View – Learn How To Be The Best Golfer That You Can Be

Make sure that your entire party keeps track of who's ball is who's by reading off the number and brand name found on each ball. By ensuring this knowledge is shared, you can avoid racking up your score with penalty shots when your ball lands close to another one because you can verify you are hitting the right ball.Golf is full of techniques that you need to master. If you want to swing your club properly, you must train yourself to do so. You should also make yourself aware of the many facets that form a well-rounded game. This article was written to help you with some tips and tricks to improve your game.If you are having difficulty carving out time for practice, you should focus your efforts on perfecting your short game. Specifically, look to practice your chipping and putting skills. Practice these skills, and you will soon start to notice an improvement on the green. When you have additional time, look into increasing your wedge and 7 iron skills, Start Reading Whole Lot More

The Deal With Eczema And How To Treat It

Know what your triggers are so you can avoid them. Your triggers may laundry detergent, soaps, and dust. You should probably steer clear of any products that contain fragrances, chemicals or other unnatural additives. Choose pure and unscented products instead. This will help to reduce the discomfort of daily eczema flare-ups. There are many different treatments available when it comes to eczema, and the way to start feeling better is to begin right away. Now that you read this article, you have a number of helpful suggestions to follow. Get started right away, and feel better about yourself and your skin as you defeat your eczema. If you have been prescribed medicine for your eczema, take it as directed. When all else fails, your doctor may be able to help ease your symptoms by prescribing you something a little stronger than what you can get over the counter. While no one really wants to rely on medication, sometimes it is necessary. Excessive sweat Start Reading Whole Lot More

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Child rearing may be one of the toughest challenges any person will have to go through. By following the techniques listed in this article, you too can train your children to become responsible. Doing so can make you a better parent.When your child is acting up, trying giving them a second chance instead of punishing them right away. This can be done by simply asking your child to "please make a different choice. This allows your child to correct himself or herself and avoids the negative feelings resulting from more forceful discipline. Using rules that detail exactly what is expected can help to cut back on the amount of fighting that goes on and ultimately help your children live together more harmoniously. Instead of saying "no hitting" you could tell your children to "touch gently", as it is a kinder way of saying the same thing.Teach your young child how to organize by providing specific places for him to put away his things. Toys and arts and Start Reading Whole Lot More

Multi-Level Marketing Tips, Tricks And Techniques You Need To Know

If you are looking to add people to your downline, you have to make sure to stay in touch with them once they get started. There are many people that put all of their energy into recruiting others then they abandon them once they sign up. You would make more money if you help them get on their feet.Many folks look for financial opportunities that allow them to be their own boss. Unfortunately, few people realize this common dream. If you want to make this dream a reality, you should consider getting into multi-level marketing. Also known as MLM, this type of marketing can be very lucrative when you have the right information. Keep reading to find out more. Most multi-level marketers use the Internet as their primary marketing medium, and you should too. Technology makes it easy to get out information about your products and services, and automation makes following up easy with prospective contacts. Take advantage of any and every tool you can find to Start Reading Whole Lot More

Know what . . . – Time Management Information You Ought To Know About

Reward yourself for completing tasks. That might mean watching tv, or having a chat with a friend. The incentive is just what you need to complete each task. When you schedule your day, list things by their importance. This will help you organize your day. Consider which of your tasks is most important. List them at the beginning of your agenda. Eventually you'll get to the things that aren't so important.Try eliminating distractions in your life if you're always running out of time for things. For example, it's difficult to finish a report for your boss if your email is constantly dinging and cell phone always ringing. Turn off technology and learn to tune out distractions. You should be able to focus much better!Put your phone on "Do Not Disturb" if you really need to be efficient with your time. Phone calls are one of the biggest barriers to time management. You hear that phone ring, and the immediate impulse is to stop everything to answer. This Start Reading Whole Lot More

What I presume – Learn To Grow Like A Pro: Organic Gardening Advice

Make gardening efficient. One of the biggest time wasters is not keeping track of your tools and having to look for them every time you need them. You can prepare what you need beforehand, keep it all handy in a toolbox or a shed, and you will be ready to work in your garden at a moment's notice. If needed, purchase a tool belt or heavy duty pants with plenty of pockets.Try to keep your garden diverse. Increasing your plant variety will draw further variety in the wildlife around. Create a more natural environment by planting lots of varieties in you garden. Your garden will become a haven for you to enjoy, as well as a help to the environment.A great method to deter bugs in any organic garden is by planting garlic in several areas. The smell of garlic will deter insects from inhabiting your garden. You should ensure to plant garlic all around and near the plants which are likely to attract pests. Garlic also has the added benefit of being a great raw Start Reading Whole Lot More

Nine Suggestions – Have You Heard About Forex? You Could Be Making Money Online Easily.

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Helpful Tips For Alleviating Your Back Pain

Contrary to popular belief, a person who suffers from a bad back should exercise frequently. Those suffering back pain may want to take it easy, thinking that will help, but exercise is actually more beneficial. Stretching back muscles can ease the back pain for a lot of people.If you have to be seated for an extended period, such as a flight or at a movie, alternate crossing your legs and shifting your weight. When your legs are crossed, your muscles in your back and hip are used, so these muscles are doing something even when sitting. Alternate crossing your legs so you use all of your muscles. Change positions often to avoid putting undue pressure on specific muscles. As you tidy your home, prepare dinner or do any other type of repetitive activity, make an effort to limit the duration for which you perform such tasks. You should make sure you shift your stance, and move around from time to time.Get some help in managing your back pains. Do not feel Start Reading Whole Lot More

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My personal Observation – Hair Care Tips That Everyone Should Know!

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Need A New Look? Try These Great Beauty Tips

Treat facial skin gently, never rubbing or stretching it. This is important to remember as you are following your skincare routine or throughout the day. Rubbing can cause wrinkles and creases, making aging skin look older than its years. Instead of rubbing your face, try patting it dry lightly. To make your manicure last longer, apply a quality top coat. Touching up your manicure every other day will keep it looking good; free from peeling or chipping. Having a high-quality top coat can make your manicure last several days longer than normal. Whenever you use lip liner, make certain it is a shade very similar to that of the lipstick you will wear with it. A mismatched lip liner will cause unneeded attention at the edges of your mouth.You need to apply a moisturizing eye cream each night in order to keep the delicate skin around the eyes from drying out. By keeping your eye area moisturized and healthy, you will be able to avoid dark circles, fine lines, Start Reading Whole Lot More

Browse this – Technology Blogs Made Simple, Try These Tips!

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5 Options – Ways To Make The Most Of Your Real Estate Purchase

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Solutions ! – Try Some Of These Great Tips For Forex Trading

Trading on the foreign exchange seems to be a big mystery to a lot of people. However, it is really not any more difficult than trading any other commodity. If you want to learn more about forex, start by reading the many books and articles written on the subject. This article contains some ideas to get you started.Try not to trade uncommon currency pairs. Trading within common currency pairings gives you the ability to make trades quickly with other people who are in the same market. Trading uncommon currencies can leave you holding on to them for longer than you'd like to. Being able to evaluate market sentiment when involved in Forex trading can often be your most important skill. For example, during the 2008 economic crisis, even though the crisis centered on the United States, many traders still flocked to the US Dollar because the market sentiment was that the US Dollar was the most stable. Therefore, it is important not just to be aware of good Start Reading Whole Lot More

What exactly ? ? – Be A Better Golfer With This Great Advice

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My Viewpoint – Cooking Tips To Make You Shine In The Kitchen

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