Answer:
All metals have a shiny appearance (at least when freshly polished), are good conductors of heat and electricity; form alloys with other metals; and have at least one basic oxide.
Nonmetals have a dull, coloured or colourless appearance; are brittle when solid; are poor conductors of heat and electricity; and have acidic oxides.
Metalloids are metallic-looking brittle solids that are either semiconductors or exist in semiconducting forms, and have amphoteric or weakly acidic oxides.
YES IT IS if you add a zero to <span>Zeroes placed between other digits are always </span>significant; 4009 kg has foursignificant<span> digits. Zeroes placed after other digits but behind a decimal point are</span>significant<span>; 7.90 has three </span>significant<span> digits. Zeroes at the </span>end of a number<span> are</span>significant<span> only if they are behind a decimal point as in (c).</span>
Answer:
Explanation:
In space station artificial gravity is created by rotational motion of space station
Centifugal acceleration creates artificial gravity
ω²r = g
ω² x 400 = 9.8
ω² = 9.8 /400
ω = .1565 rad /s
no of turns per min ω / 2π per sec = 1.56 rev per min .
For Mars
Same theory will apply
ω²r = g
ω² x 400 = 3.7
ω² = 3.7 /400
ω = . 096 rad /s
n = ω / 2π
= .096 / 2π
=.01528 per sec
per min
= .9168 per min .
Nuclear fusion is the process by which multiple nuclei join together to form a heavier nucleus.
Nuclear fusion of light elements releases the energy that causes stars to shine and hydrogen bombs to explode.
Nuclear fusion of heavy elements (absorbing energy) occurs in the extremely high-energy conditions of supernova explosions.
Nuclear fusion in stars and supernovae is the primary process by which new natural elements are created.
It is this reaction that is harnessed in fusion power.
It takes considerable energy to force nuclei to fuse, even those of the lightest element, hydrogen.
The answer would be $3,000 because 0.30 x 10,000 = 3,000