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Luda [366]
3 years ago
10

What is mineral called that contains usable amounts of element?

Physics
2 answers:
artcher [175]3 years ago
7 0
The correct answer is a. A mineral or combination of minerals that contains metals or other substances in usable amounts is called an ore. An ore is basically a rock that contains minerals that have important elements including metals.
MrRa [10]3 years ago
7 0

Answer:

A is the right answer

Explanation:

took the test on k12. please like and rate my comment

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Why do some kinds of ice on Earth change the sea level when they melt while others do not?
maxonik [38]
Some ice has more salt then the other causing it to float up
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4 years ago
Acceleration is the rate at which what happens?
belka [17]

Answer:

Acceleration is a vector quantity that is defined as the rate at which an object changes its velocity. An object is accelerating if it is changing its velocity.

may be it helped you

6 0
3 years ago
Ask Your Teacher A trough is 16 ft long and its ends have the shape of isosceles triangles that are 2 ft across at the top and h
zloy xaker [14]

Answer:0.210 ft/min

Explanation:

Given

Length of trough L=16 ft

width of base b=2 ft

height of triangleh=1 ft

From Similar triangles property

\frac{4}{2x}=\frac{1}{y}

2y=x

volume of water in time t

V=\frac{1}{2}\times (2x\cdot y)\cdot

V=16xy

V=32y^2

differentiating

\frac{\mathrm{d} V}{\mathrm{d} t}=32\times 2\times y\times \frac{\mathrm{d} y}{\mathrm{d} t}

at y=8 in.\approx 0.667 ft

9=64\times 0.667\times \frac{\mathrm{d} y}{\mathrm{d} t}

\frac{\mathrm{d} y}{\mathrm{d} t}=\frac{9}{64\times 0.667}

\frac{\mathrm{d} y}{\mathrm{d} t}=0.210 ft/min

6 0
4 years ago
WHAT ELEMENT CAN FORM A POSITIVE ION
Svetach [21]
Any metal element can form a positive ion because they lose electrons to become stabilized
6 0
4 years ago
Fluorine-18 undergoes beta-plus decay. The child isotope has an atomic mass of
ANEK [815]

Answer:

18

Explanation:

got it right on edge

4 0
3 years ago
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