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zubka84 [21]
3 years ago
13

Choose all that apply. Two things that were introduced to the Old World from the New during the Columbian Exchange were _____. c

attle potatoes corn wheat
Geography
2 answers:
IgorC [24]3 years ago
8 0

Answer:

potatoes and corn!!!

andriy [413]3 years ago
3 0
The answer is Potatoes and corn
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To measure a base lone, a steel stape 30m lang, Standardised at 15°C with a pull of 80N was used. find the correction per tape l
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The correction of thermal expansion per tape length, if the temperature at the time of measurements is 25°c and the pull exerted is 150N is 4.67 ×10 ⁻³m.

Thermal expansion is the tendency of remembering to change in form, volume, and region in response to an alternate in temperature. Temperature is a monotonic characteristic of the common molecular kinetic power of a substance.

Given,

Length of steel tape = 30m

Temperature at standardization = 15°C

The temperature at the time of measurement = 25°C

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Young modulus of elasticity = E =  E= 2X10^5 N/mm2

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For temperature correction  Cm = (Tm - T₀)αL₀

Putting α = ( 25 - 15 ) × 11.2 × 10⁻⁶ × 30

            Cm = 3.36 ×  10⁻³ m

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Putting value'

    C pull =  (150 - 80) × 30 ×  1000 /8 ×2 × 10⁵

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Total correction = 3.36 × 10⁻³ m + 1.31 × 10 ⁻³

Total correction = 4.67 ×10 ⁻³

Learn more about thermal expansion here:-brainly.com/question/1166774

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