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Vladimir [108]
3 years ago
8

A calculation based upon _______is only as accurate as the device used for measurement.​

Chemistry
1 answer:
Tema [17]3 years ago
7 0
Hmmmm i understand but i wanna know what to measure or whats about?
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when a log of wood burns, it undergoes a _______. a. physical change. b. chemical change. c. physical and a chemical change. d.
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B. Chemical change is the answer!<span />
3 0
2 years ago
Read 2 more answers
In lab, you calculate the density of an iron rod to be 7.30 g/cm3. The accepted value
OLga [1]

Answer:

<h2>6.41 %</h2>

Explanation:

The percentage error of a certain measurement can be found by using the formula

P(\%) =  \frac{error}{actual \:  \: number}  \times 100\% \\

From the question

actual density = 7.80 g/cm³

error = 7.30 - 7.80 = 0.5

We have

p(\%) =  \frac{0.5}{7.8}  \times 100 \\  = 6.410256...

We have the final answer as

<h3>6.41 %</h3>

Hope this helps you

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2 years ago
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DENIUS [597]
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3 years ago
Both "Ode to the West wind" and "Ode for Melancholy"
Rama09 [41]
The answer that would best complete the given statement above would be option A. Both "Ode to the West wind" and "Ode for Melancholy" praise <span>something non-human. Hope this answers your question. Have a great day ahead!</span>
5 0
3 years ago
Homework 1
Bond [772]

Answer:

average for silk =141"

average for cotton =96"

average for nylon = 70"

if you desire a slower falling parachute to protect the body from damage,

silk is the best

if you desire a faster falling parachute to escape enemy bullets,

nylon is the best

Explanation:

Homework 1

Problem Solving

1. Kelvin and Xavier were doing an investigation on parachutes. One of them suggested that the type of material the parachute was made from had an effect on how long it took to reach the ground. Their results are given in

the table below.

(a) Calculate the average time in seconds for each material.

Time taken for parachute to reach the ground (seconds)

MATERIAL

1st TRY

2nd TRY

3rd TRY

AVERAGE

Sik

144

140  average of 3 = 141

139

Cotton

98

96   average of 3  = 96

94

Nylon

72

68    average of 3 = 70

70

5 0
2 years ago
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