The magnetic force on a current-carrying wire due to a magnetic field is given by
![F=ILB](https://tex.z-dn.net/?f=F%3DILB)
where
I is the current
L the wire length
B the magnetic field strength
In our problem, L=1.0 m,
![F=9.1 \cdot 10^{-5} N](https://tex.z-dn.net/?f=F%3D9.1%20%5Ccdot%2010%5E%7B-5%7D%20N)
and
![B=1.3 \cdot 10^{-4}T](https://tex.z-dn.net/?f=B%3D1.3%20%5Ccdot%2010%5E%7B-4%7DT)
, so we can re-arrange the formula to find the current in the wire:
Answer:
The additional trials needed is 48 trials
Explanation:
Given;
initial number of trials, n = 16 trials
the standard deviation, σ = 0.24 s
initial standard error, ε = 0.06 s
The standard error is given by;
![\epsilon = \frac{\sigma}{\sqrt{n} }](https://tex.z-dn.net/?f=%5Cepsilon%20%3D%20%5Cfrac%7B%5Csigma%7D%7B%5Csqrt%7Bn%7D%20%7D)
To reduce the standard error to 0.03 s, let the additional number of trials = x
![0.03= \frac{0.24}{\sqrt{n+x} } \\\\0.03= \frac{0.24}{\sqrt{16+x} }\\\\0.03\sqrt{16+x} = 0.24\\\\\sqrt{16+x} = \frac{0.24}{0.03} \\\\\sqrt{16+x} = 8\\\\16+x = 8^2\\\\16+x = 64\\\\x = 64 -16\\\\x = 48 \ trials](https://tex.z-dn.net/?f=0.03%3D%20%5Cfrac%7B0.24%7D%7B%5Csqrt%7Bn%2Bx%7D%20%7D%20%5C%5C%5C%5C0.03%3D%20%5Cfrac%7B0.24%7D%7B%5Csqrt%7B16%2Bx%7D%20%7D%5C%5C%5C%5C0.03%5Csqrt%7B16%2Bx%7D%20%3D%200.24%5C%5C%5C%5C%5Csqrt%7B16%2Bx%7D%20%3D%20%5Cfrac%7B0.24%7D%7B0.03%7D%20%5C%5C%5C%5C%5Csqrt%7B16%2Bx%7D%20%3D%208%5C%5C%5C%5C16%2Bx%20%3D%208%5E2%5C%5C%5C%5C16%2Bx%20%3D%2064%5C%5C%5C%5Cx%20%3D%2064%20-16%5C%5C%5C%5Cx%20%3D%2048%20%5C%20trials)
Therefore, the additional trials needed is 48 trials.
Let's check the relationship
![\\ \rm\hookrightarrow g=\dfrac{GM}{r^2}](https://tex.z-dn.net/?f=%5C%5C%20%5Crm%5Chookrightarrow%20g%3D%5Cdfrac%7BGM%7D%7Br%5E2%7D)
![\\ \rm\hookrightarrow g\propto G](https://tex.z-dn.net/?f=%5C%5C%20%5Crm%5Chookrightarrow%20g%5Cpropto%20G)
So
- Raindrops will fall faster . .
- Also walking on ground would become more difficult as g increases.
Option C is wrong by now .Let's check D once
![\\ \rm\hookrightarrow T\propto \dfrac{1}{\sqrt{g}}](https://tex.z-dn.net/?f=%5C%5C%20%5Crm%5Chookrightarrow%20T%5Cpropto%20%5Cdfrac%7B1%7D%7B%5Csqrt%7Bg%7D%7D)
- So time period of simple pendulum would decrease.
Out of the choices given, the best choice to explain the direction of the moving force of air is from area o high pressure to areas of low pressure. The correct answer is B.
Answer:
1 . What happens when you drop the stone?
Depending on the weight from which the stone was dropped, the glass might well break
2 depending on the size and weight and shape on the stone the glass might well break
3 depending on the density on the stone the stone might when float on the water
Explanition :
GIVE ME BRAINLESS PLEASE !!