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photoshop1234 [79]
3 years ago
5

Global positioning satellites (GPS) can be used to determine your position with great accuracy. If one of the satellites is 20,0

00 km from you, and you want to know your position to 2m, what percentage uncertainity is required?
Physics
1 answer:
o-na [289]3 years ago
8 0

Answer:

0.00001 %

Explanation:

The distance from satellite = 20000 km

Position range = 2 m

The percentage uncertainty is given by dividing the distance from satellite by the position range of desired accuracy.

Percentage uncertainty is given by

\dfrac{2}{20000\times 10^3}\times 100=0.00001\ \%

The percentage uncertainty that is required is 0.00001 %

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How is an image formed by a plane mirror?
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<h3><u>Answer;</u></h3>

Light bounces off of the mirror and then appears to come from behind the mirror.

<h3><u>Explanation;</u></h3>
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3 years ago
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2 years ago
Find the length of each vector below.
Leona [35]

Answer:

a. 3.6 units

b. 1.4 units

c. 3.6 units

d. 6.1 units

Explanation:

The length of a vector is given by the following formula:

Length = √(x² + y²)

where,

x = x-component of vector

y = y-component of vector

a.

Here,

x = 2

y = 3

Therefore,

Length = √(2² + 3²)

Length = √13

<u>Length = 3.6 units</u>

<u />

b.

Here,

x = 1

y = 1

Therefore,

Length = √(1² + 1²)

Length = √2

<u>Length = 1.4 units</u>

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c.

Here,

x = 2

y = -3

Therefore,

Length = √(2² + (-3)²)

Length = √13

<u>Length = 3.6 units</u>

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d.

Here,

x = 1

y = -6

Therefore,

Length = √(1² + (-6)²)

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8 0
3 years ago
What is the current when a 71-W lamp is connected to 120 V?
vredina [299]
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