Answer:
5.5 to 7 Mohs
Explanation:
Glass ranks around 5.5 to 7 Mohs, but sapphire crystal has a hardness of 9 Mohs, making it only slightly less hard than diamond.
Answer:
My Words
Gravity, also called gravitation, in mechanics, the universal force of attraction acting between all matter. On Earth all bodies have a weight, or downward force of gravity, proportional to their mass, which Earth's mass exerts on them. Gravity is measured by the acceleration that it gives to freely falling objects.
Explanation:
Not my own words
The gravitational force is a force that attracts any two objects with mass. We call the gravitational force attractive because it always tries to pull masses together, it never pushes them apart. In fact, every object, including you, is pulling on every other object in the entire universe!
Answer:
N = 13.65 rpm
Explanation:
given data
radius = 11 m
centripetal acceleration = 2.3 times that due to gravity
to find out
how many revolutions per minute
solution
we know here centripetal accel = 2.3 × g
ω²r = 2.3 × 9.8
ω² × 11 = 2.3 × 9.8
solve it we get
ω² = 2.0490
ω = 1.43 rad/s
and
ω =
1.43 =
solve it we get
N = 13.65 rpm
Answer:
The answer is compound
Explanation:
heterogeneous mixture is wronggggg
The volume of an object that has a mass of 16 g and a density of 12 g/cm³ is 1.33cm³.
<h3>How to calculate density?</h3>
Density is a measure of a substance mass in relation with it's volume, which means that it can be calculated by dividing the mass of the substance by volume as follows:
Density = mass ÷ volume
According to this question, an object has a mass of 16 g and a density of 12 g/cm³. The volume can be calculated as follows:
Volume = 16g ÷ 12g/cm³
Volume = 1.33cm³
Therefore, the volume of an object that has a mass of 16 g and a density of 12 g/cm³ is 1.33cm³.
Learn more about volume at: brainly.com/question/952755
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