Answer:
3. µs g /7
Explanation:
The largest Force appear when the maximal friction Force is required.
Second Newton law for the small block:
Second Newton law for the Big Block:
A stationary siren emits sound of frequency 1000 Hz and wavelength 0.343 m. An observer who is moving toward the siren will meas
1 answer:
Answer:
f>1000Hz and wavelength=0.343 m
Explanation:
We are given that
Frequency of stationary siren,f=1000 Hz
Wavelength of stationary sound,
When a observer is moving towards the siren then the frequency increases.
Therefore,an observer who is moving towards the siren measure a frequency >1000 Hz.
The wavelength depends upon the speed of source.
But we are given that siren is stationary.
Therefore, source is not moving and then the wavelength remains same.
f>1000Hz and wavelength=0.343 m
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Answer:
a
b
Explanation:
From the question we are told that
The inner radius is
The outer radius is
The nu umber of turns is
The current it is carrying is
Generally the magnetic field is mathematically represented as
Where is the permeability of free space with a constant value
And the given distance where the magnetic field is felt is r = 0.9 cm = 0.009 m
Now substituting values
Fro the second question the distance of the position considered from the center is r = 1.2 cm = 0.012 m
So the magnetic field is