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natima [27]
2 years ago
12

An ant travels 2.78 cm (West) and then turns and travels 6.25 cm (South 40 degrees East). What is the ant's total displacement?

Physics
1 answer:
andrey2020 [161]2 years ago
5 0
From\ cosine\ theorem:\\\\
c^2=a^2+b^2-2abcos(\angle between\ a\ and\ b)\\\\
a=2,78\\b=6,25\\
\angle between\ a\ and\ b=90+50=140^{\circ}\\\\
c^2=2,78^2+6,25^2-2*2,78*6,25cos(140^{\circ})\\\\
c^2=7,7284+39,0625-34,75*(-0,77)\\\\c^2=46,7909+26,7575\\\\c^2=735484\\\\c=8,58cm\\\\Total\ displacement\ is\ equal\ to\ 8,58cm.

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A coil of Nichrome wire is 25.0 m long. The wire has a diameter of 0.400mm and is at 20.0°C. If it carries a current of 0.500 A,
yaroslaw [1]

The power delivered to the coil is 0.5 Watts

<h3>Resistivity of a material</h3>

The formula for calculating the power delivered to it is expressed according to the equation

Power = I²R

where

I is the current

R is the resistance

Given

Current = 0.500A

Determine the resistance using the resistivity formula

R = ρL/A

Substitute the given parameters

R = 10^-6*(25)/0.002²

R = 2ohms

Substitute

Power = I²R

Power = (0.5)²(2)

Power = 0.5watts

Hence the power delivered to the coil is 0.5 Watts

Learn more on resistivity here: brainly.com/question/17010736

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1 year ago
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Explain how water is controlled to generate electrical energy in hydro-electric dams. and show a diagram is help explain the ans
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1 year ago
How do intermolecular forces (IF) and internal kinetic energy (KE) compare in gases?
Colt1911 [192]

Answer:

IF < KE

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5 0
2 years ago
an observer A fires a gun and another observer B at a distance 1650 m away from A hears its sound . If the speed of sound is 330
Arisa [49]

Answer:

5 seconds

Explanation:

Data provided in the question as per the question is as follows

Distance = 1,650 meter

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Based on the given information, the time taken is

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2 years ago
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