Answer:
incomplete question, resistor must be there
Explanation:
Answer:
The coefficient of static friction is 0.29
Explanation:
Given that,
Radius of the merry-go-round, r = 4.4 m
The operator turns on the ride and brings it up to its proper turning rate of one complete rotation every 7.7 s.
We need to find the least coefficient of static friction between the cat and the merry-go-round that will allow the cat to stay in place, without sliding. For this the centripetal force is balanced by the frictional force.
![\mu mg=\dfrac{mv^2}{r}](https://tex.z-dn.net/?f=%5Cmu%20mg%3D%5Cdfrac%7Bmv%5E2%7D%7Br%7D)
v is the speed of cat, ![v=\dfrac{2\pi r}{t}](https://tex.z-dn.net/?f=v%3D%5Cdfrac%7B2%5Cpi%20r%7D%7Bt%7D)
![\mu=\dfrac{4\pi^2r}{gt^2}\\\\\mu=\dfrac{4\pi^2\times 4.4}{9.8\times (7.7)^2}\\\\\mu=0.29](https://tex.z-dn.net/?f=%5Cmu%3D%5Cdfrac%7B4%5Cpi%5E2r%7D%7Bgt%5E2%7D%5C%5C%5C%5C%5Cmu%3D%5Cdfrac%7B4%5Cpi%5E2%5Ctimes%204.4%7D%7B9.8%5Ctimes%20%287.7%29%5E2%7D%5C%5C%5C%5C%5Cmu%3D0.29)
So, the least coefficient of static friction between the cat and the merry-go-round is 0.29.
Answer:
You need to write an essay with 800 to 1,200 words. That talks about the significance of one of the seminal works (Definition- a work that strongly influenced people. Example: Martin Luther King Jr's speech "I Have A Dream") in the unit and how it connects to current issues (Example- Politics). It should be clearly stated and should be well supported by research (Example- a trustworthy article talking about its influence). You should properly cite at least 3 good sources from different perspectives. (Example- a republicans view for one source, a democratic for another, and a neutral for the third) You should also use direct quotes (Example: "Let them eat cake." - Marie Antoinette) and paraphrase- put it in your own words. (Example: Marie Antoinette said that they should eat cake.) I hope this helps, good luck! :)
Explanation:
Explanation:
Magnet: It has two poles: South pole and North pole.
Magnetic field lines are stronger near the poles of the magnet.
Same poles repel each other. There is a magnetic force of repulsion between the same poles. North- North poles repel each other.
Unlike poles attract each other. There is magnetic force of attraction between the opposite poles. South- North poles attract each other.
Mono poles cannot exist.
From the given statements, the magnetic poles are described by:
A north pole must exist with a south pole.
Two south poles placed near each other will repel each other.
A north pole and a south pole placed near each other will attract each other.