I have got a problem:
It's well known that two electric charges have either attractive or repulsive forces on each other.
And Einstein told us that there is no message that can travel at a speed beyond c.
Besides I was told that the actions and reactions between the two charges are based on...
I was discovering a way to focus a number of charged particles which has been accelerated by Van de Graff generator into a beam.I do tried to find ideas in uniform magnetic field,but it seems I can only focus the particles onto a point rather than a beam.So here I was asking whether there had...
As it is known to all,the atmospheric electric field does exists.In fact,near the ground its strength is about 100N/m.That's enough for my design.
Let's get some activated carbon powder.I think we can regard them as smooth,conductive balls with density(ρ)=2.7g/cm3,r=1×10-5m。If we want a can...
I believe it because plastic,especially PE molecules can just be regarded as long-chained carbon atoms,while petrol molecules are some shorter ones.So with cracking technology we can get petrol from plastic easily.The profits are high,because the world's oil price keeps increasing and the...
I know there is no way to deflect a neutron by electromagnetic force since it is a uncharged particle.Can anyone come up with any other ways?Thanks very much.
I'll get a word in edgeways:
Newton had just told us the force equals the change rate of the momentum,which writes:
F∝mv/t,Or F=kmv/t.
In Metric, k =1.However,you can make k≠1 in other measurement metrics.That's where the floor host's mistake is,I thought.
At this very moment(t=0),the mass(M-m) will recoil at the speed v0=mu/(M-m).Then from now on,the remain mass can be regarded as a spring oscillator,whose initial speed is v0.
If you want to know the motion equation of the remain mass(Let's call it M').You need the knowledge of trigonometric...
how to turn a proton into neutron by e+p-->n?
Just as the topic said,is it possible to turn a proton into a neutron by forcing a electron into the proton?If it's possible,what condition is it required?