All Questions
221
questions
-6
votes
0
answers
77
views
Was relativistic mass necessary? [closed]
according to newton if velocity is constant then momentum will stay fix as mass would not change according to conservation of mass and if mass changer the newton will be wrong and if it does not then ...
- 1
0
votes
0
answers
26
views
Can two objects of different mass experience the same air resistance? [duplicate]
This question is assuming that the objects have the same shape and size, but different masses. I know that all objects have the same gravitational acceleration on earth, which is about 9.8 m/s^2. ...
- 539
1
vote
1
answer
89
views
How do objects with more mass accelerate when pushed downward?
This is kind of a simple question.
I was basing it off Newton's second law, $$F=ma$$
With the same applied force, an object with more mass will accelerate less.
However, what if two objects of unequal ...
- 73.7k
0
votes
0
answers
19
views
How does mass-energy equivalence work with chemical bonds? [duplicate]
If you have, for instance, 2 oxygen atoms and do E=mc2 to get their equivalent energy, you get about 2.38nJ. However, if you have diatomic oxygen, there's also the energy of the bond; about 0.8aJ. ...
- 185
-1
votes
2
answers
78
views
Rest Mass Energy
What exactly is the Rest mass energy? I know the usual goes Like it is total energy stored in mass $m$ that is in Rest. so for someone moving relative to the frame that the mass $m$ is in (a rest ...
- 207k
3
votes
2
answers
504
views
Is the mass of curved space, additional mass?
According to Einstein, mass, say in the form of matter, curves space. It is the curvature of space that gives rise to gravity. Now I have heard there is an energy associated with the curvature of ...
- 12.1k
1
vote
4
answers
673
views
How does mass relate to kinetic energy?
I was working on homework and I had to list what kinetic energy depends on. Interestingly, it turns out it's also based on mass, not only speed. Does anyone have an explanation?
- 21.9k
40
votes
12
answers
13k
views
Does information have mass?
Does information itself have any detectable mass? If so, how is the mass of information measured if at all possible? Mathematically, is it possible for information itself to have mass? What would be ...
0
votes
3
answers
138
views
Why does an alpha particle traveling at the same speed as a beta particle have 'only' about twenty times the energy? Rather than over seven thousand? [closed]
An alpha particle travels at about half the speed as a beta particle, right? ~5% of light speed versus ~10%?
Therefore, if you doubled its velocity, its energy would roughly quadruple, correct? (Or ...
rob♦
- 91.5k
1
vote
2
answers
198
views
Equation for relative Kinetic energy
Relative Kinetic energy is given by
K.E = ($\gamma$-1)$m_0$c²; where $m_0$ is rest mass
but can it also be given by this
K.E= $\frac{1}{2}\gamma m_0v²$;
where v is velocity of particle
can it?
- 6,102
15
votes
2
answers
3k
views
Has it been experimentally proven that energy causes gravity?
I know that under general relativity energy and mass are equivalent under $E=mc^2$. But has it been experimentally proven that energy alone causes gravity, for example, does a nuclear reaction ...
16
votes
9
answers
5k
views
How can gravity affect light?
I understand that a black hole bends the fabric of space time to a point that no object can escape.
I understand that light travels in a straight line along spacetime unless distorted by gravity. If ...
- 126
2
votes
3
answers
207
views
Energy and momentum & the relation between them
I am trying to wrap my head around energy, mass and momentum, especially in the more general scope of special relativity where massless objects moving at the speed of light also have momentum. So I am ...
- 6,734
2
votes
8
answers
306
views
If matter is a form of energy, can it be converted into another form of energy?
I have been told that energy and mass are the same. What puzzles me is why don't we use the same units of measure for both if they are the same? The unit of mass is kg and the unit of energy is the ...
- 368
0
votes
2
answers
71
views
Confusion in calculation of power [duplicate]
Question-
Sand is being dropped from a stationary dropper at a rate of 0.5 kg s$^{-1}$ on a conveyor belt moving with a velocity of 5 ms¹. The power needed to keep belt moving with the same velocity ...
- 36.1k