This is a problem based on the logic and interpretation of the variables. From the measured data taken
what is collected by the two individuals is expressed as,
- NED reference system: (x, t)
- PAM reference system: (x ', t')
From the reference system we know that ν is the speed of PAM (the other reference system) as a measurement by NED.
Then ν' is the speed of NED (from the other system of the reference) as a measurement by PAM.
Answer:
25 measurements need to be taken
Explanation:
Given:
individual uncertainty, ![u_i=1.5\ mm](https://tex.z-dn.net/?f=u_i%3D1.5%5C%20mm)
- Let the uncertainty mean be
![u_m=0.3\ mm](https://tex.z-dn.net/?f=u_m%3D0.3%5C%20mm)
<u>Now we have the relation as:</u>
![n=(\frac{u_i}{u_m})^2](https://tex.z-dn.net/?f=n%3D%28%5Cfrac%7Bu_i%7D%7Bu_m%7D%29%5E2)
where:
n= number of measurements
![n=(\frac{1.5}{0.3})^2](https://tex.z-dn.net/?f=n%3D%28%5Cfrac%7B1.5%7D%7B0.3%7D%29%5E2)
measurements need to taken in this case.
Answer:
lol do you still need help?
Explanation:
During a single replacement, the Zn and H will switch places. That means the product formed will be ZnCl and H2.
Answer:
They appear to recede from our viewpoint.
That is, their emitted spectra are shifted toward the red (red-shift).
The wave-lengths that are received on earth are somewhat longer because of the "Doppler" shift of the receding atoms.