A tentative explanation for a set of observation that can be tested by further e

Question

A tentative explanation for a set of observation that can be tested by further experimentation. a statement describing a relationship between phenomena that is always the same under the same conditions. a unifying principle that explains a body of facts and relations. a model used to visualize the invisible. The diameter of the nucleus of an atom is approximately 1 times 10^-15 meters. If 1 nm is equal to 10 Angstroms, what is the diameter of the nucleus in Angstroms? 1 times 10^-23 A 1 times 10^-8 A 1 times 10^-7 A 1 times 10^-5 A A gold ingot weights 5.00 lbs. If the density of gold is 19.31 g/cm^3, and the length and width of the ingot are 12.0 cm and 4.00 respectively, what is the height of the ingot? 6.50 times 10^-3 cm 3.59 cm 10.2 cm 2.45 cm

Explanation / Answer

1) we know that : Scientific law can be considered as a statement which is derived after a repeated experimental observations based on some aspects of the universe. It is applicable only under a particular predefiend conditions.

So answer is : A

2) the diameter = 10^-15 meters

the diameter in angstroms = 10^-5 X 10^-10 meters = 1 X 10^-5 Angstroms

3) the weight of gold = 5.00 lbs

1lbs = 453.592 grams

5lbs = 5 X 453.592grams = 2267.96 grams

density of gold = 19.31 g /cm^3

the volume of 2267.96 grams = mass / density = 2267.96 / 19.31 = 117.45 cm^3

volume = length X bredth X height

117.45 = 12 X 4X height

height = 2.45 cm

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