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I am Lyosha [343]
3 years ago
6

a large new diamond mine has just opened and the price of diamonds has gone down. since she has studied economics, cecilia decid

es to buy a diamond necklace since she knows that
Social Studies
2 answers:
Butoxors [25]3 years ago
8 0
The cost of diamonds depends only on the demand. :)
Vinvika [58]3 years ago
7 0

Answer:

If the supply increases the price decreases.

Explanation:

<u>If the supply of diamonds increases the price decreases. </u>In fact, one of the reasons why diamonds are very expensive is because it is a scarce commodity in the world and also its extraction and production process has a high cost.

Cecilia can afford to acquire the diamond necklace by the opening of the new mine since the price has decreased and she knows that being a non-renewable resource, when the mine runs out the price of diamonds will rise again and she could sell her necklace and get a profit.

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Assume that the rod in Fig.31.2 has a length of 0.86 m,the resistor has value 2.2 ,and a magnetic field of 8.0 T is directed int
frutty [35]

1) 0.48 m/s

2) Clockwise

3) 10.3 N

Explanation:

1)

The figure is missing: find it in attachment.

As the rod is pulled along the rails, in the region of magnetic field, an electromotive force is induced in the rod itself, due to the change in magnetic flux through the circuit enclosed by the rod and the rails.

The magnitude of this induced electromotive force (which is equivalent to the potential difference induced in the rod) is

V=BvL

where:

B is the strength of the magnetic field

v is the speed of the rod

L is the length of the rod

Also we know that according to Ohm's law, the potential difference across the resistance is equal to

V=RI

where

R is the resistance of the rod

I is the current

Since the potential difference across the resistor is equal to the potential difference across the rod, we can combine the two equations, and we get:

BvL=RI\\v=\frac{RI}{BL}

Here we have:

R=2.2 \Omega\\B=8.0 T\\L=0.86 m\\I=1.5 A

Therefore, the speed of the rod must be:

v=\frac{(2.2)(1.5)}{(8.0)(0.86)}=0.48 m/s

2)

Here we have to apply Lenz's law, which states that the direction of the induced emf (and so, of the induced current) is such that it opposes the change in magnetic flux through the system.

First of all, here we notice that as the rod moves, the area enclosed by the circuit decreases: this means that the magnetic flux through the circuit decreases too.

As a result, the induced current must produce a magnetic field which goes in the same direction as the external field, in order to "restore" the magnetic flux. Here the external magnetic field points inside the paper, so the magnetic field produced by the induced current must also point inside the paper.

In order for that to happen, we see that the induced current must flow clockwise: in fact, if we take the rod and we apply the right-hand rule, we see that if we place the thumb towards the left (direction of the clockwise current), the other fingers "wrapped" point into the paper at the center of the circuit, so this is the correct direction.

3)

A current-carrying wire in a magnetic field experiences a force of magnitude

F=ILB

where

I is the current

L is the length of the wire

B is the strength of the magnetic field

Here we have

I = 1.5 A

L = 0.86 m

B = 8.0 T

So the force experienced by the rod is

F=(1.5)(8.0)(0.86)=10.3 N

Therefore, we must apply an equal and opposite force of 10.3 N in order to maintain keep the acceleration of the rod to zero, so that the velocity is constant, and the current is constant as well.

7 0
3 years ago
Which theory explains why focusing on minor crimes like traffic violations and drinking or using illegal drugs in public underpi
Natalka [10]
I’m pretty sure it’s C
Sorry if I’m wrong
4 0
3 years ago
Read 2 more answers
While interviewing her new client, the social worker learned that manuel had been raised by a mentally ill father who did not ha
irinina [24]
This is in line with the socialization hypothesis. It is the<span> link between material conditions and value priorities is not one of first adjustment. A big body of proof tells us that an individual's basic values are fixed when they reach adult, and changing will start soon.</span>
3 0
3 years ago
when dividing discrete objects among people, what factors affect how much value a person places on all or part of an object?
juin [17]

The factors affect is :- Its monetary worth Its favorable/unfavorable characteristics like color or flavor Its sentiment values Hence, option (b) is the correct answer.

<h3>Is monetary a value?</h3>

Value is the appraised, monetary, or material value of an item, service, or asset. Numerous ideas are associated with the word "value," including shareholder value, company value, selling price, and market value. Valuation is the process of determining and establishing a value on something like a corporation or an asset.

<h3>Do you mean about monetary money?</h3>

The term "monetary" refers to money, particularly the total quantity of dosh in a nation. Several countries tighten their monetary policy to combat inflation.

To know more about Monetary visit :

brainly.com/question/1068495

#SPJ4

The Complete Question : When dividing discrete objects among people, what factors affect how much value a person places on all or part of an object?

(a). Its monetary worth

(b). Its favorable/unfavorable characteristics like color or flavor

(c). Its sentimental value

(d). All of the above

3 0
1 year ago
Which food selections would need to be removed from the tray by the nurse for a client recovering from thyroidectomy?
BARSIC [14]

Roasted almonds would need to be removed from the tray by the nurse for a client recovering from thyroidectomy as it is too hard and crunchy.

A patient suffering from thyroidectomy needs a soft diet because the esophagus is right behind the thyroid and trachea. The patient should avoid ingesting difficult or scratchy meals like chips or raw veggies. avoid orange or tomato juice and different acidic meals which could sting the throat. if you cough right after drinking, strive to ingest thicker beverages, along with a smoothie. you can note that your bowel movements aren't regular right after your surgery.

Thyroidectomy is the surgical elimination of all or part of your thyroid gland. Your thyroid is a butterfly-fashioned gland positioned at the bottom of your neck. It produces hormones that manipulate every issue of your metabolism, from your coronary heart fee to how fast you burn calories.

After your thyroidectomy or thyroid lobectomy, you can have a transient sore throat, neck ache, trouble swallowing, or a vulnerable voice. Your food plan may be confined for the evening of your surgical treatment, but in most instances, it can go back to ordinary the following day.

Learn more about thyroid gland here brainly.com/question/2469666

#SPJ4

4 0
2 years ago
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