If light travels 290,000,000 meters in 1 second, simply divide 1 second by 290,000,000 to find the time it takes to travel 1 meter.
1 / 290,000,000 = 0.000000003448 seconds (<em>or 3.5 nano seconds</em>)
Answer:
b.)Electrons leave the negative battery terminal and electrons enter the positive terminal.
Explanation:
- First of all, the carriers of charge in an electrical circuit are the electrons, not the protons. In fact, electrons in a conductor (such as the copper wire) are free to move, while protons are bond inside the nuclei of the atoms, so they are not free to move. This means that only choices a) and b) could be correct.
- Finally, we know that charges with same sign repel each other, while charges with opposite sign attract each other. This means that electrons are repelled by the negative terminal of the battery and attracted by the positive terminal of the battery. Therefore, the correct choice must be
b.)Electrons leave the negative battery terminal and electrons enter the positive terminal.
Answer:
The kinetic energy of an electron in the beam is 5.04 keV.
Explanation:
We need to find the velocity of the electron by using the De Broglie wavelength:
Where:
λ: is the wavelength = 0.0173 nm
v: is the velocity
m: is the electron's mass = 9.1x10⁻³¹ kg
h: is the Planck constant = 6.62x10⁻³⁴ J.s
Now, we can find the kinetic energy:
Therefore, the kinetic energy of an electron in the beam is 5.04 keV.
I hope it helps you!
Answer:
The liquid with the highest viscosity will reach the bottom last.
Explanation:
Viscosity is the measurement of the liquid or resistance of fluids to flow and it therefore measures its internal friction, as the liquid with high viscosity has its molecular structure gives it a high internal friction when it is moving, so it moves slowly, but the liquid with a lower viscosity has its molecular structure gives it a low internal friction and its resistance to the surface which pass on it is being lower, so it flows faster on the surface.
