Answer:
5.5 rad/s
Explanation:
The friction between the coin and the turntable provides the centripetal force that keeps the coin in circular motion. Therefore, we can write:
![\mu mg = m\omega^2 r](https://tex.z-dn.net/?f=%5Cmu%20mg%20%3D%20m%5Comega%5E2%20r)
where
is the coefficient of friction
m is the mass of the coin
is the acceleration of gravity
is the angular speed
r is the distance of the coin from the centre of rotation
In this problem,
r = 11.0 cm = 0.11 m
The coin starts to slip when the centripetal force becomes larger than the maximum frictional force:
![m\omega^2 r > \mu m g](https://tex.z-dn.net/?f=m%5Comega%5E2%20r%20%3E%20%5Cmu%20m%20g)
Solving for
, we find the angular speed at which this happens:
![\omega = \sqrt{\frac{\mu g}{r}}=\sqrt{\frac{(0.340)(9.8)}{0.11}}=5.5 rad/s](https://tex.z-dn.net/?f=%5Comega%20%3D%20%5Csqrt%7B%5Cfrac%7B%5Cmu%20g%7D%7Br%7D%7D%3D%5Csqrt%7B%5Cfrac%7B%280.340%29%289.8%29%7D%7B0.11%7D%7D%3D5.5%20rad%2Fs)
Attractive Property – Magnet attracts ferromagnetic materials like iron, cobalt, and nickel.
Repulsive Properties – Like magnetic poles repel each other and unlike magnetic poles attract each other.
Directive Property – A freely suspended magnet always points in a north-south direction.
Have a good day!
Answer:
The formula is CH+H2 it’s stable beacuse the to ions h and c make it stable element compound is ready and compactable
Explanation:
Explanation:
Charles's law gives the relation between volume and the temperature of ideal gas when pressure is held fixed. It states that the volume of an ideal gas is directly proportional to its temperature at constant pressure.
![V\propto T](https://tex.z-dn.net/?f=V%5Cpropto%20T)
![\dfrac{V}{T}=constant](https://tex.z-dn.net/?f=%5Cdfrac%7BV%7D%7BT%7D%3Dconstant)
If the temperature of an ideal gas is doubled, its volume also gets doubled as there is a direct relation between volume and temperature.
Answer:
Beats are the difference in frequency.
(a) is correct option.
Explanation:
Beat :
Beat is the difference of the frequency of two waves.
The difference in frequency is equal to the number of beat per second.
Amplitude :
Amplitude of the wave is the maximum displacement.
Frequency :
Frequency is the number oscillations of wave in per second.
Intensity :
Intensity is the power per unit area.
Hence, Beats are the difference in frequency.