Physics. How Do I Find The Coefficient Of Static Friction? How Do Colors Work, Considering The Full Light Spectrum?
Physics. While Trying To Decide Where To Hang A Framed Picture, You Press It Against The Wall To Keep It From Falling. The Picture Weighs N And You P
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Physics : How Do I Find The Coefficient Of Static Friction
While trying to decide where to hang a framed picture, you press it against the wall to keep it from falling. The picture weighs N and you press against the frame with a force of 17 N at an angle of 45° from the vertical. What is the coefficient of static friction between the wall and the picture? ~~~ Doogin ~~~
Physics : How Do Colors Work Considering The Full Light Spectrum
I know blue objects reflect the "blue" frequencies of the visible spectrum, red reflect red, black reflects none, white reflects all. But how does infrared, ultraviolet, and the other ranges tie in? For example, is is possible to have two pigments that are visibly identicle but one reflects more infrared than the other or at a slightly different frequency? If that happens and we studied the effect, then it would have some useful applications. ~~~ Mad Tinkerer ~~~
Physics : How Do You Find The Amplitude Of A Point On A Standing Wave
For any standing wave, how do you find the amplitude at a given point? ~~~ madeye500 ~~~
Physics : How Quickly Does A Bullet Decelerate In Body Tissue
Assuming a muzzle velocity of about 1000 feet. What is the deceleration function in air? What is it in tissue? ~~~ Ejsenstejn ~~~
Physics : What Is The Final Velocity After The Carts Collide
A kg dynamics cart heading east at a velocity of m/s collides in a head-on collision with another cart of mass kg traveling west with a speed of m/s. After the collision, the two carts link together. What is their final velocity? ~~~ Ruphert J ~~~
Physics : What Is The Size Of A Wter Molecule Relative To Something In The Observable World
Like if the oxygen was the size of a golf ball, how far away are the hydrogen atoms? Thanks. ~~~ the_less_traveled_road ~~~
Physics : What Is The Best Angle For Maximum Distance
I am building an air cannon for my science fair project. The question is "What is the best possible angle for the most distance when firing a projectile?". I thought it might be 45 degrees (because 45 degrees is the perfect balance between straight up and straight forward) but I have been told it isn't 45 degrees. I thought about it and i have come to the conclusion that it must be a lower angle because of gravity and air resistance. I would also like any websites addressing this topic. ~~~ pianoman2011 ~~~
Physics : Where Does The Energy For Gravity Come From
According to the law of conservation of energy, energy is not created from nothing. It is either converted from mass or from other types of energy. In this case, where does the energy for gravity come from? For instance, the force pushing down the water in Niagara Falls is gravity, and we generate electricity from this energy. Where does this energy come from? ~~~ SnizzleDizzle ~~~
Physics : How Many Bacterium Can One Molecule Of Water Wash Off A Nonporous Surface
Please assume the surface to be tilted at 45 degrees from horizontal, and there is no wind or vibration to consider. ~~~ SmashBottom ~~~
Physics : What Are The Differences Between Work And Torque
a)They are both the product of of a force and a distance. What is it about the distances that make torque and work different? b)What's a gyroscope? What doe the angular momentum has to do with a gyroscope? ~~~ mamimii ~~~
Physics : How Many Lifts Would You Need To Do To Use Enough Energy To Burn Off The Chocolate Bar
Your friend lifts a 45 barbell from the ground to a height of . Your friend claims doing that has "burned" the amount of food calories equivalent to a 43-(-) chocolate bar-namely, 230 food calories . ~~~ mn1998 ~~~
Physics : How Is Electricity Generated From Geothermal Plants And Operated And Transmitted To Our Home
pls give me links where i can find some reliable answers. ~~~ cuteness ~~~
Physics : What Are The Factors Affecting The Speed Of A Car Rolling Down A Ramp
I am currently doing a project on this. So thanks alot if you could answer me this question. Should i use big wheels,small wheels,how many wheels and what other factors that would affect the speed? ~~~ jnll94 ~~~
Physics : How Fast Does Night Travel Around The Globe
If you started in New York, how fast do you have to travel westbound to stay ahead of nightfall? At what speed does "dark" move across the land? I assume it would be slower at the equator. ~~~ jaxpilot11 ~~~
Physics : How Do You Find The Parametric Equation Of A Bowl Using Calculus
The bowl has to be perfect so that when you drop a ball on the edge it takes the same time to reach the center as any other spot on the edge. ~~~ House, M.D. ~~~
Physics : What Is The Best Way To Fall From A Great Height
What would be the position to land in that would (ideally) cause you the least amount of damage? ~~~ flanneryjane ~~~
A large particles moves horizontally from pt A to B. The movt is in the same direction as a uniform electric field. The mass of particle is 3 kg. The charge q of particle is -5C. The strength of electric field is 8 N/C. The strength of the vertical gravitational field g is 10 N/kg and points straight down. The distrance r btw A B is 25 cm. ~~~ bklonging ~~~
Physics : What Is The Best Electrical Conductor And What Allows It To Go Through
What is the best electrical conductor and what allows it to go through? How does it go through? Are there ions or something? I am clueless. Please help ~~~ MentoKings10 ~~~
Physics : How Can I Keep An Ice Cube Solid For Three Minutes In Boiling Water
The device must fit inside a 8 cm x 10 cm x 6 cm rectangular prism. The device must allow a standard sized ice cube to be inserted and withdrawn quickly. I need to be able do to this experiment at home. ~~~ ???? n (formerly ???? S) ~~~
Physics : What Are The Most Amount Of Electrons We Have Ever Observed In One Atom
Hello. I know that atomic number does not necessarily refer to the number of electrons and protons present in an atom but simply, the number or protons present in an atom correct? So I am wondering, even with all the new elements we have created or discovered, what is the most amount of electrons we have ever found in an atom? Thanks so much. ~~~ Joe F ~~~
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