Answer:
Explanation:
The Balmer series in a hydrogen atom relates the possible electron transitions down to the n = 2 position to the wavelength of the emission that scientists observe. In quantum physics, when electrons transition between different energy levels around the atom (described by the principal quantum number, n) they either release or absorb a photon. The Balmer series describes the transitions from higher energy levels to the second energy level and the wavelengths of the emitted photons. You can calculate this using the Rydberg formula.
Pretty sure it is weather :))
Speed (ex: meters/second, miles/hour)
The answer is D. They have a higher frequency than X-rays.
Gamma-rays falls in the electromagnetic spectrum above, Gamma-rays have frequencies greater than 10¹⁸ cycles per second, or Hertz (Hz)
Answer:
a = - 0.209 [m/s²]
Explanation:
To solve this problem we must use Newton's second law which tells us that the sum of forces on a body is equal to the product of mass by acceleration.
∑F = m*a
We will take the positive forces to the right and the negative forces to the left.
![155-277+113=43*a\\-9=43*a\\a = - 0.209[m/s^{2} ]](https://tex.z-dn.net/?f=155-277%2B113%3D43%2Aa%5C%5C-9%3D43%2Aa%5C%5Ca%20%3D%20-%200.209%5Bm%2Fs%5E%7B2%7D%20%5D)
The negative sign means that the box accelerates in a negative direction to the left.
