The food calorie (also known as nutritional calorie and large calorie) is a term used in place of what is otherwise known as a kilocalorie (kcal). Not surprisingly, the food calorie is used to represent units of energy associated with eating, as in "An average hot dog with ketchup and a bun contains 315 calories." A hungry person woke up this morning and went to the McDonald's down the street to eat a Full Big Breakfast, which included hotcakes, eggs, and a large biscuit. According to figures published by McDonald's, the Big Breakfast contains 1090 calories (meaning food calories). Required:
a. How many stairs (of height 7.25 inches) would a person of mass 140.0 lbm have to climb in order to expend the calories consumed in the Big Breakfast?
b. How many stairs (of height 7.25 inches) would a person of mass 180.0 lbm have to climb in order to expend the calories consumed in the Big Breakfast?

passing a magnet thought the

mixture , because iron gets attracted to magnet .

3 1/4 %

explanation:

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3

most historians agree that gabriel mouton, the vicar of st. paul’s church in lyons, france, is the “founding father” of the metric system. he proposed a decimal system of measurement in 1670. mouton based it on the length of one minute of arc of a great circle of the earth (now called a nautical mile, 1852 meters). he also proposed the swing-length of a pendulum with a frequency of one beat per second as the unit of length (about 25 cm). a pendulum beating with this length would have been fairly easy to produce, thus facilitating the widespread distribution of uniform standards. over the years, his work was revised, improved, and extended by a number of french scientists.

the political sponsor of weights and measures reform in the french revolutionary national assembly was the bishop of autun, better known as talleyrand. under his auspices, the french academy appointed several committees to carry out the work of developing a usable system of weights and measures for france. one of the committees recommended a decimalized measurement system based upon a length equal to one ten-millionth of the length of a quadrant of the earth’s meridian (i.e., one ten-millionth of the distance between the equator and the north pole).