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4 years ago

Need help on this quick

Physics

2 answers:

MrMuchimi4 years ago

6 0

Answer:

option 1 could be the answer. since like poles repel. according to the diagram that i can figure out so far. is that the magnet are repelling. if it was attracting it would show a imaginary lines in between the two poles.

Vlad1618 [11]4 years ago

5 0

Answer:

the first one

Explanation:

because the same side magnates repel each other

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3 points

Afina-wow [57]

Answer:

When a ball on one end of the cradle is pulled away from the others and then released, it strikes the next ball in the cradle, which remains.

So it will be D

Explanation: Hope this helps :)

4 0

3 years ago

La persona se encuentra a 3 metros del origen. Se mantiene en reposo durante 2 . Luego se mueve durante 2 segundos a razón de 1

ladessa [460]

Answer:

Explanation:

No entiendo

7 0

3 years ago

Transcranial magnetic stimulation (TMS) is a noninvasive technique used to stimulate regions of the human brain. A small coil is

Xelga [282]

Answer:

$7.3114*10^{-5}V$

Explanation:

To give a solution to the exercise, it is necessary to consider the concepts related to magnetic flux and Faraday's law of induction. Faraday's law states that the voltage induced in a closed circuit is directly proportional to the speed with which the magnetic flux that crosses any surface with the circuit as an edge changes over time.

It is represented under the equation,

$\epsilon = N \frac{\Delta\Phi}{\Delta t}$

Where,

$\epsilon$ is the induced electromotive force

N = Number of loops

$\Delta t$ = Time

$\Delta\Phi$ = Magnetic Flux

For definition the change in magnetic flux is:

$\Delta \Phi = \Delta B A cos\phi$

Where,

B= Magnetic field

Substituting at the first equation we have

$\epsilon = N \frac{\Delta B A Cos\phi}{\Delta t}$

$\epsilon = N \frac{(B_2-B_1) (\pi r^2) Cos\phi}{\Delta t}$

Our values are given by,

N = 1 turn

$B_2 = 1T$

$B_1 = 0T$

r = 1.6mm

$\phi = 0\°$

$\Delta t = 100ms$

Replacing,

$\epsilon = (1) \frac{(1-0) (\pi (1.6*10^{-3})^2) Cos(0)}{110*10^{-3}}$

$\epsilon = 7.311*10^{-5}V$

<em>Therefore the magnitud of the induced emf around a horizontal circle of tissue is $7.3114*10^{-5}V$ </em>

8 0

4 years ago

Every substance has a specific value of heat required to change the temperature of 1 gram of the substance by 1 degree Celsius.

Ipatiy [6.2K]

C coefficient is expressed in terms of joules divided by grams and celsius

4 0

3 years ago

An inventive child named Nick wants to reach an apple in a tree without climbing the tree. Sitting in a chair connected to a rop

jeyben [28]

A) diagram is shown on the image below

b) Mass m = 450/9.8 = 45.918 KgNet upward force = T + T = 2T = 620 NNet downward force = 290 + 160 = 450 NResultant force F = Net upward force - Net downward force ma = 620 - 450 45.918 a = 170 Acceleration a = 170/45.918 = 3.7 m/s^2 (upward)Here Net upward force > Net downward force, So the resultant force directed upwards, hence acceleration will be upward.

(c)Consider the case of boy alone, then from Newtons law of motion we can write Net force F = n + T - 290 ma = n + 310 - 290 where m = 290/9.8 = 29.59 Kg 29.59 * 3.7 = n + 20 109.483 = n + 20 n = 89.483 N

4 0

4 years ago