Question

(d) a man
B. Write the correct reason(s) for each.
1. When one metre is divided into 100 equal
divisions, each division is one cm long.
(a) One thousand kg make one tonne.
(b) Sixty seconds make one minute.
(c) One hundred cm make one metre.
(d) One cm makes hundred metre.
is an annlication​

Answer 1

Explanation:

EXAMPLE 1: CALCULATING PERCENT UNCERTAINTY: A BAG OF APPLES

A grocery store sells a 5-pound bags of apples. You purchase four bags over the course of a month and weigh the apples each time. You obtain the following measurements:

Week 1 weight: 4.8 lb

Week 2 weight: 5.3 lb

Week 3 weight: 4.9 lb

Week 4 weight: 5.4 lb

You determine that the weight of the 5-pound bag has an uncertainty of ±0.4 lb. What is the percent uncertainty of the bag’s weight?

Strategy

First, observe that the expected value of the bag’s weight, A, is 5 lb. The uncertainty in this value, δA, is 0.4 lb. We can use the following equation to determine the percent uncertainty of the weight:

\displaystyle \%\text{ unc}=\frac{\delta{A}}{A}\times100\%% unc=

A

δA

×100%

Solution

Plug the known values into the equation:

\displaystyle \%\text{ unc}=\frac{0.4\text{ lb}}{5\text{ lb}}\times100\%=8\%% unc=

5 lb

0.4 lb

×100%=8%

Discussion

We can conclude that the weight of the apple bag is 5 lb ± 8%. Consider how this percent uncertainty would change if the bag of apples were half as heavy, but the uncertainty in the weight remained the same. Hint for future calculations: when calculating percent uncertainty, always remember that you must multiply the fraction by 100%. If you do not do this, you will have a decimal quantity, not a percent value. use this method and follow me

Answer 2

Answer:

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