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Afina-wow [57]
3 years ago
13

What is always true about lenses? PLEASE HELP I WILL GIVE YOU BRAINLEIST!!

Engineering
2 answers:
STatiana [176]3 years ago
8 0
B. Lenses bend light to make an image of an object appear smaller or larger
Lynna [10]3 years ago
4 0

Answer:

B. Lenses bend light to make an image of an object appear smaller or larger.

Explanation:

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Energia Oltenida directamente des sur​
mr Goodwill [35]
RUNCUREL, Romania (Thomson Reuters Foundation) - The letters arrived just before Christmas last year, 134 envelopes addressed to the residents of Runcurel, a village in Romania's south west.

Inside was the news that Jilt Nord, a state-owned coal mine, planned to expand and the people of Runcurel would lose their homes and land.
8 0
3 years ago
The cart travels the track again and now experiences a constant tangential acceleration from point A to point C. The speeds of t
Tju [1.3M]

Answer:

15.99 ft/s

Explanation:

From Newton's equation of motion, we have

v = u + at

v = Final speed

u = initial speed

a = acceleration

t = time

now

for the points A and C

v = 17.6 ft/s

u = 13.2 ft/s

t = 3 s

thus,

17.6 = 13.2 + a(3)

or

3a = 17.6 - 13.2

3a = 4.4

or

a = 1.467 m/s²

Thus,

For Points A and B

v = speed at B i.e v'

u = 13.2 ft/s

a = 1.467 ft/s²

t = 1.90 s

therefore,

v' = 13.2 + (1.467 × 1.90 )

v' = 13.2  + 2.7867

v' = 15.9867 ≈ 15.99 ft/s

3 0
3 years ago
Identify the true statements about the relationship between the distillate and the sample mixture in a simple distillation.
fenix001 [56]

Answer:

The answer is "Choice b,c, and d".

Explanation:

The distillation would be the separation phase of working liquids that boil close to each other. Whenever the formulation is long-term, a much more fraction of a compound collected will have a lower boiling point than it would otherwise be. In other phrases, it'll be pulverized with both the lower level, also with the boiling point. Its structure of both the diluted volatile component may therefore include another cell's contaminants.

8 0
3 years ago
Determine the COP of a refrigerator that removes heat from the food compartment at a rate of 5160 kJ/h for each kW of power it c
Mars2501 [29]

Answer:

COP_R=1.433\\Q_H=2.433kW

Explanation:

Hello,

In this case, the coefficient of performance of this refrigerator is defined in terms of the removed heat and the work input as:

COP_R=\frac{Q_{L}}{W_{in}} =\frac{5160\frac{kJ}{h}*\frac{1h}{3600s} }{1kJ/s} =1.433

Moreover, the rate of heat rejection to the outside air tuns out:

W_{in}=Q_H-Q_L\\Q_H=W_{in}+Q_L=1kW+5160\frac{kJ}{h}*\frac{1h}{3600s} =2.433kW

Best regards.

3 0
3 years ago
Read 2 more answers
What do electrons have to do with electrical current?
erastova [34]

Answer:

Electrons in atoms can act as our charge carrier, because every electron carries a negative charge. If we can free an electron from an atom and force it to move, we can create electricity.

6 0
4 years ago
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