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swat32
3 years ago
9

B/ Evaluate e^(πi/2)

Engineering
2 answers:
ivanzaharov [21]3 years ago
8 0

Explanation:

≈4.8

There really isn't an elegant way to express it. Just plug and chug for irrationals raised to other irrationals.

Lilit [14]3 years ago
7 0

You get a result immediately from Euler's formula:

<em>e</em> ^(<em>i π</em>/2) = cos(<em>π</em>/2) + <em>i</em> sin(<em>π</em>/2) = 0 + <em>i</em> * 1 = <em>i</em>

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An aggregate blend consists of 65% of aggregate A and 35% of aggregate B. The bulk specific gravities of aggregate A and B are 2
lozanna [386]

Answer:

2.68

Explanation:

Percentage by Mass of each Aggregate :

Pa = 65% ; Pb = 35%;

Bulk Specific gravity of each aggregate :

Ga = 2.45 ; Gb = 3.25

Gsb = (Pa + Pb) / (Pa/Ga + Pb/Gb)

Gsb = (65 + 35) / (65/2.45 + 35/3.25)

Gsb = (65 + 35) / 37.299843

Gsb = 100 / 37.299843

Gsb = 2.68

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3 years ago
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Answer:

Diphtheria.

Explanation:

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Diphtheria is a bacterial disease caused by bacillus Corynebacterium diphtheria excreting a potent toxins in the blood that spreads easily. Therefore, if not treated on time, it could lead to a fatal heart attack, nerve damage or paralysis and death in some cases. Some of the symptoms of diphtheria are fever, sore throat and breathing disorder.

Hence, diphtheria is a disease which affects the throat of living organisms such as humans.

Additionally, diphtheria can be prevented through the use of vaccines or immunization.

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