Please give me a quick answer this is due soon!

Physics

2 answers:

svetlana [45]3 years ago

8 0

Answer:

pole

Explanation:

c. pole is the brainliest answer

finlep [7]3 years ago

7 0

Answer:

Earth acts as a giant magnet with magnetic poles and a magnetic field over which it <u>exerts magnetic force.</u> Earth has north and south magnetic poles like a bar magnet. Earth's magnetic poles are not the same as the geographic poles.

Explanation:

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pav-90 [236]

C. Observations and measurements

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3 years ago

What is an electric motor? Explain its operation. 2-3 sentence

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Answer:

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3 years ago

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A person swings a 0.546-kg tether ball tied to a 4.56-m rope in an approximately horizontal circle. If the maximum tension the r

Murrr4er [49]

Answer:

2.1 rad/s

Explanation:

Given that,

Mass of a tether ball, m = 0.546 kg

Length of a rope, l = 4.56 m

The maximum tension the rope can withstand before breaking is 11.0 N

We need to find the maximum angular speed of the ball. Let v is the linear velocity. The maximum tension is balanced by the centripetal force acting on it. It can be given by :

$F=\dfrac{mv^2}{r}\\\\v=\sqrt{\dfrac{Fr}{m}} \\\\v=\sqrt{\dfrac{11\times 4.56}{0.546}} \\\\=9.584\ m/s$

Let $\omega$ is the angular speed of the ball. The relation between the angular speed and angular velocity is given by :

$v=r\omega\\\\\omega=\dfrac{v}{r}\\\\=\dfrac{9.584}{4.56}\\\\=2.1\ rad/s$

So, the maximum angular speed of the ball is 2.1 rad/s.

4 0

3 years ago

WILL NAME THE BRAINLIEST! An airplane undergoes the following displacements: It first flies 72 km in a direction of 30° East of

nekit [7.7K]

Answer:

82.1 km

Explanation:

We need to resolve each displacement along two perpendicular directions: the east-west direction (let's label it with x) and the north-south direction (y). Resolving each vector:

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