Why are specimens usually very thin slices of material.

Answers

Answer 1
Because of the thinness, light can flow through, making the specimen visible.

Related Questions

Technician A says that a range shift is used to select high or low gear ratios within the transfer case. Technician B says that a mode shift is used to select two wheel drive or four wheel drive. Which technician is correct

Answers

Technician A says that a range shift is used to select high or low gear ratios within the transfer case is true while Technician B  is false.

What is this shift about?

A range shift is known to often take place when there is either high or low speed ratio of the given transfer case that is known to be selected.

Note that A range shift arrangement is known to be seen  for moving a gear reduction unit that is found between a low-range operating speed and also that of a high-range operating speed.

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A company intends to market a new product and it estimates that there is a 20% chance that it will be first in the market

and this will give 2 million dollar revenue in its first year. However, if it is not the first in the market it will only be .5 million.

What is the EMV?

Answers

The EMV - Ending Market Value is given as:
$2,400,000.

How is the EMV Arrived At?

The EMV is given as:

BMV x (i + r); Where

BMV is the Beginning Market Value; and

r is the interest rateor percentage given.

Hence the EMV = 2,000,000 x ( 1 + 20%)

= 2,000,000 x 1.2

= $ 2, 400,000.

It is to be noted that the BMV is the Beginning Market Value which is the value of an investment at the start of the business period.

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Calculate LER for the same wing if we increase the span to 0.245 m. By increasing the span, we also increase the glider weight to 0.0523 newtons.

4.74
0.2108
0.0523
0.18

Answers

Answer:

0.2108

Explanation:

WA = 0.245 x 0.045 = 0.011025 m2. Then, LER = 0.011025/0.0523 = 0.2108.

An iron–constantan thermocouple is to be used to measure temperatures between 0 and 400°C. What will be the non-linearity error as a percentage of the full-scale reading at 100°C if a linear relationship is assumed between e.m.f. and temperature? e.m.f. at 100°C = 5.268 mV, e.m.f. at 400°C = 21.846 mV

Answers

Answer:

  -0.89%

Explanation:

Assuming a proportional relationship between EMF and Celsius temperature, the measured value of EMF at 100 °C will be interpreted as a temperature of ...

  T/5.268 = 400/21.846

  T = 5.268(400/21.846) ≈ 96.457 . . . . °C

The error as a fraction of full scale is ...

  (96.457 -100)/400 × 100% ≈ -0.886%

The error at 100 °C is about -0.89% of full scale.

technician A says that many port fuel-injection systems on four-cylinder engines use a simultaneous firing of injectors. Technician B says that sequential fuel injectors are timed and pulsed individually, much like the spark plugs are sequentially operated in firing order of the engine. Who is correct

Answers

In the two scenario above concerning port fuel-injection and sequential fuel injectors, only Technician b is correct.

How many injectors can be found in a 4 cylinder?

A vehicle often has one fuel injector per cylinder and if one has a four-cylinder car, it would also have four fuel injectors.

Note that Fuel-pressure regulators that are found on a port fuel-injected systems is one that often work with injector pressures that is said to be of 30 to 55 PSI.

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A(n) ______ is used to measure fluid flow in engineering

Answers

Answer:

A pitot tube is used to measure fluid flow in engineering

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