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Darya [45]
3 years ago
13

What is Magnetism ? pls help

Physics
1 answer:
mote1985 [20]3 years ago
7 0

Answer:

A motion produced by electric charge which causes attractive and repulsive forces between objects.

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If it took 10sec to climb the ladder what was your power in watts nd kilowatt?
Vaselesa [24]
That depends on my mass and the height of the ladder.
4 0
4 years ago
A person jogs 10 meters in 5 seconds calculate her avarage speed​
Bas_tet [7]

Answer:

So first determine how many times does 5 go into 100.

100/5=20

Thus in 100 seconds the boy would have traveled a distance of 10 meters 20 times.

10*20=200

If the boy travels 10meters in 5 seconds, he travels 200m in 100seconds.

8 0
4 years ago
Read 2 more answers
A long wire carries a current density proportional to the distance from its center, J=(Jo/ro)•r, where Jo and ro are constants a
IgorC [24]

Answer:

B = \mu_0(\frac{1}{3} \frac{J_0}{r_0} r^2)

Explanation:

As the current density is given as

J = \frac{J_0}{r_0}r

now we have current inside wire given as

i = \int J(2\pi r)dr

i = \int \frac{J_0}{r_0} r(2\pi r)dr

i = 2\pi \frac{J_0}{r_0} \int r^2 dr

i = \frac{2}{3} \pi \frac{J_0}{r_0} r^3

Now by Ampere's law we will have

\int B. dl = \mu_0 i

B. (2\pi r) = \mu_0(\frac{2}{3} \pi \frac{J_0}{r_0} r^3)

B = \mu_0(\frac{1}{3} \frac{J_0}{r_0} r^2)

4 0
3 years ago
Does the distance a person kicks a soccer ball
3241004551 [841]

Answer:

Independent variable: how far the soccer ball is kicked.

Dependent variable: how well the person does on their math test

Explanation:

The distance the ball is kicked is what the scientist can change. On the other hand, in this experiment, how well the person does on their test supposedly relies on how far the soccer ball is kicked.

5 0
3 years ago
A scientist is planning an experiment that will include the measurement of temperatures. She wishes to avoid using negative valu
cricket20 [7]

Answer:

C.

Explanation:

Fahrenheit scale is a temperature scale that measures the boiling point of water at 212 degrees F and the freezing point at 32 degrees F. The Fahrenheit scale was developed by the German scientist Daniel Gabriel Fahrenheit in 1724.

In the given scenario, the scientist, who wishes to measure the temperature of her experiment which will expectantly be colder than the point of water, should use the Fahrenheit scale.

So, the correct answer is option C.

8 0
3 years ago
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