since some of the components of the scale are metallic, they are prone to rusting which would cause error in reading of the scale so there is organized checking if the scale to correct that.
The price of many products in the market is "__ dollars per pound", or "___ rupees for 100 grams".
The scale in the market is used to measure how many pounds or how many grams the customer is taking home, and how much he should pay for it. Sometimes the scale is used to weigh the "money" too.
If the scale is not showing accurate weight, then the shopkeeper is either cheating himself or cheating the customer. Fair and honest business is not possible without accurate scales.
There are nearly 100 verses in the Bible regarding this. Leviticus 19:35 is the first one.
When two waves with different frequency travelling in the same medium meet each other, they produce an interference pattern called beat.
<em><u>The frequency of the beat produced is equivalent to </u></em><em><u>the difference between the individual frequencies of the two waves involved.</u></em>
<em><u>Therefore; in this case since the frequency of the beat is 20 Hz, that is from 20 beats per second.</u></em>
We need to find a pair from the choices whose frequency difference is 20 Hz.
This happens to be choice D. 22 Hz and 42 Hz, that is 42 Hz - 22 Hz = 20 Hz
<span>Solar panels convert light energy from sunlight into electricity energy , Metalloid is most likely used in solar panels The answer is : </span> A metalloid is used because it is a semiconductor and can become more conductive when more light shines on it. Metalloids are shiny,<span> semiconductive and they are brittle.</span>
