http://www.wired.com/wiredscience/2011/06/iphone-space-shuttle/" [Broken]. Anyways, it says that it will look for radiation effects with "single bit upsets", is memory really that sensible to radiation?
Anyways, applying the concept of Schwarzchild radius to an electron seems pointless.
EDIT: It appears it's not entirely pointless. There's even http://en.wikipedia.org/wiki/Black_hole_electron" [Broken]
1. "...in contact with an equal and opposite force" to what?
the object won't stop unless a there is a force that causes it to decelerate until it stops.
2. No, it will keep moving at a constant 100km/h.
Remember that acceleration involves work and energy, so nothing accelerates unless...
Consider 2 spacecraft isolated in space, with a mirror on their back, facing each other. One light pulse is shot between them. The photons reflect off the first one, transferring a momentum off 2p, travels in the opposite directions, reflects off the second spacecraft, giving it 2p...
Re: HELP!!! pounds to kcal
You are trying to add apples and oranges.
Kcal is a unit of energy, while pound is a unit of mass.
For determining how much weight in the long run a person will gain after consuming X kcal you would need precise data on his energy consumption.
Open system exchanges matter and energy with its surrounding.
Closed systems exchanges just energy with its surroudings; e.g a Thermos
An isolated system doesnt exchange anything with its surroundings. Its like if it were alone in the universe.
As far as enthalpies of fusion and vaporization, they're different for different temps and pressures, so I'm sure that the calculations go right if you use the enthalpies of the below-triple-point pressure and not the STP enthalpies.
Actually, plants gets most of their mass from water and CO2, they just get a little ammount of nutrient from the soil. Jan Baptist van Helmont did this experiment long ago, weighing the soil before planting a tree, and a couple years later, the soil weighed almost exactly the same.
The only way it would deploy early is if the system is compeltely upside down (i.e balloon below payload).
Your tape idea sounds goo too but as you said, the stretching of the balloon might deploy it earlier.
Thats what I meant with the high center of gravity, so it pops and the center of gravity has to be lower, so it turns around. With some aerodynamics you can maintain it that way without flipping (I think so).
Many think that F=ma is the equation of force, but it is actually F=(change in momentum)/time, when you jump, your muscles do force in order to get you high, then when you fall you have that same energy in the form of kinetic energy. The time it takes your body to come to a stop is inversely...
Once I needed a remote controlled circuit, and I bought a $2.99 R/C car and hacked it. It was way easier than making one from scratch. Just avoid parks and place with kids or be prepared for many undesired triggerings.