3 years ago

What are the building blocks of minerals? (1 point)?

1 answer:

8 0

Minerals are composed mainly of "elements". Elements are mainly the basic building blocks of nearly everything around us.
Minerals are defined as substances that are found naturally in Earth.
Minerals have definite structures and compositions.
Currently, there are over 3000 known minerals.

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Match the speed to the section that describes.

inn [45]

Answer:

a=2 ok do it and ........

4 0

3 years ago

A mass on a spring A oscillates at twice the frequency of the same mass on spring B. Which statement is correct?A.The spring con

Nataliya [291]

Answer:

A.The spring constant for B is one quarter of the spring constant for A.

Explanation:

If spring A oscillates at twice the frequency of spring B, and period is frequency inverted. It means spring B has a period twice of spring A's.

$T_B = 2T_A$

As $T = 2\pi\sqrt{\frac{m}{k}}$ , and the 2 springs have the same mass

$2\pi\sqrt{\frac{m}{k_B}} = 2\pi\sqrt{\frac{m}{k_A}}$

$\sqrt{k_A} = 2\sqrt{B}$

$k_A = 4k_B$

$k_B = k_A/4$

So A.The spring constant for B is one quarter of the spring constant for A. is the correct answer.

3 0

4 years ago

An ideal gas is confined within a closed cylinder at atmospheric pressure (1.013 * 105 Pa) by a piston. The piston moves until t

likoan [24]

Answer:

$911700\ \text{Pa}$

Explanation:

$P_1$ = Initial pressure = $1.013\times 10^5\ \text{Pa}$

$V_1$ = Initial volume

$V_2$ = Final volume = $\dfrac{V_1}{9}\\\Rightarrow \dfrac{V_1}{V_2}=9$

Temperature is the same in the initial and final state

From the ideal gas law we have

$P_1V_1=P_2V_2\\\Rightarrow P_2=\dfrac{P_1V_1}{V_2}\\\Rightarrow P_2=P_1\times9\\\Rightarrow P_2=1.013\times 10^5\times 9\\\Rightarrow P_2=911700\ \text{Pa}$