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Alexxandr [17]
3 years ago
10

An electromagnet is connected to and powered by a battery, as shown below. This electromagnet is moved through a coil of wires.

What will likely happen? What would the results of this electromagnet be out of these. A. A current will be induced in the electromagnet. B. A current will be induced in the coil of wire. C. Nothing will happen because the electromagnet will cancel out any electricity. D. The electromagnet will become permanently stronger. E. The coil of wire will generate a magnetic field.
Physics
1 answer:
jok3333 [9.3K]3 years ago
4 0

Answer:the correct ans is D

Explanation:

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The floor of the Atlantic Ocean is spreading slowly. It spreads at the rate of 1 to 10 centimeters per year. Why would it be use
In-s [12.5K]

C because...

Models represent objects, events, and processes in the real world.

Models are often used when an object, event, or process

occurs too slowly or too quickly;

is too small or too large;

is too complicated or too dangerous.

The ocean is spreading at such a slow rate that it would take scientists 50 or more years to collect enough meaningful data from the ocean floor to complete a study. Therefore, scientists use models in order to both predict how the floor will keep spreading and to understand what the ocean floor looked like thousands of years in the past.

8 0
3 years ago
A 3.42 kg mass hanging vertically from a spring on the Earth (where g = 9.8 m/s2) undergoes simple oscillatory motion. If the sp
sineoko [7]

Answer:

Time period of oscillation on moon will be equal to 3.347 sec

Explanation:

We have given mass which is attached to the spring m = 3.42 kg

Spring constant K = 12 N/m

We have to find the period of oscillation

Period of oscillation is equal to T=2\pi \sqrt{\frac{m}{K}}, here m is mass and K is spring constant

So period of oscillation T=2\times 3.14\times \sqrt{\frac{3.42}{12}}

T=2\times 3.14\times 0.533=3.347sec

So time period of oscillation will be equal to 3.347 sec

As it is a spring mass system and from the relation we can see that time period is independent of g

So time period will be same on earth and moon

3 0
3 years ago
Why is it important to cite units when engaging in scientific conversation / problem solving?
Dmitriy789 [7]

It is really important to cite units while engaging with scientific problems as they help in evaluating the right solution without any mistake.

<u>Explanation: </u>

While solving analytical questions to evaluate the right answers, the units play a crucial role in the equations. With the help of units in the formula, we can easily judge whether we are placing the values in the same parameters and hence, lessen the probabilities of wrong answers.

For example, while adding two measurements i.e. 4 m and 36 cm; if we don't consider the units and move on with the addition, the answer will be 40. Now, the first thing is that we are adding two measurements of different parameters. Besides this, the answers will be wrong i.e. 4.36 m is the correct answer instead of 40 and that too without mentioning the unit.

The chances of selecting the wrong answer are more when we need to choose options out of multiple choices because here we often get confused. That's why we should always make sure that we approach the scientific questions along with the units.

4 0
3 years ago
A rugby player sits on a scrum machine that weighs 200 Newtons. Given that the coefficient of static friction is 0.67, the coeff
Trava [24]

a. 850 N is the minimum force needed to get the machine/player system moving, which means this is the maximum magnitude of static friction between the system and the surface they stand on.

By Newton's second law, at the moment right before the system starts to move,

• net horizontal force

∑ F[h] = F[push] - F[s. friction] = 0

• net vertical force

∑ F[v] = F[normal] - F[weight] = 0

and we have

F[s. friction] = µ[s] F[normal]

It follows that

F[weight] = F[normal] = (850 N) / (0.67) = 1268.66 N

where F[weight] is the combined weight of the player and machine. We're given the machine's weight is 200 N, so the player weighs 1068.66 N and hence has a mass of

(1068.66 N) / g ≈ 110 kg

b. To keep the system moving at a constant speed, the second-law equations from part (a) change only slightly to

∑ F[h] = F[push] - F[k. friction] = 0

∑ F[v] = F[normal] - F[weight] = 0

so that

F[k. friction] = µ[k] F[normal] = 0.56 (1268.66 N) = 710.45 N

and so the minimum force needed to keep the system moving is

F[push] = 710.45 N ≈ 710 N

4 0
2 years ago
Why is it important for scientists to replicate each other’s experiments?
AnnyKZ [126]
It is very important for scientists to replicate each other experiment because this will help to determine if important scientific results are repeatable. The correct option is A. Scientific results presented by a scientist should be reproducible anywhere in the world, without this, the results can not be accepted as theory.
4 0
3 years ago
Read 2 more answers
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