Harlan used 3 1/2 kg of sand to make a large hourglass. to make a smaller hourglass, he only used 1 3/7 kg of sand. how much more sand did it take to make the large hourglass than the smaller one?

2  kg more sand need to make  large hourglass than the smaller one

Step-by-step explanation:

given data

large house sand = 3 kg

small house sand = 1 kg

to find out

How much more sand did it take to make the large hourglass than the smaller one

solution

we know sand used for small house is 1 kg  and for large is 3 kg

so we need more extra sand is = sand used for large - sand used for small   ..........1

put here value

more extra sand is = 3 - 1

more extra sand is = 3 - 1

more extra sand is = 2

so 2  kg more sand need to make  large hourglass than the smaller one

"it's not the heat, it's the humidity".   that's a partly valid phrase you may have heard in the summer, but it's actually both.   the heat index, also known as the apparent temperature, is what the temperature feels like to the human body when relative humidity is combined with the air temperature.   this has important considerations for the human body's comfort.   when the body gets too hot, it begins to perspire or sweat to cool itself off.   if the perspiration is not able to evaporate, the body cannot regulate its temperature.   evaporation is a cooling process.   when perspiration is evaporated off the body, it effectively reduces the body's temperature.   when the atmospheric moisture content (i.e. relative humidity) is high, the rate of perspiration from the body decreases.   in other words, the human body feels warmer in humid conditions.   the opposite is true when the relative humidity decreases because the rate of perspiration increases.   the body actually feels cooler in arid conditions.   there is direct relationship between the air temperature and relative humidity and the heat index, meaning as the air temperature and relative humidity increase (decrease), the heat index increases (decreases).

step-by-step explanation: