Which of the following statements about gemstones is true? Choose one:

Physics

1 answer:

Ivan3 years ago

5 0

Answer:

Explanation:

Emerald is not a variety of corundum rather its a variety of beryl.

A precious or semiprecious stone may or may not be transparent.

The value of gemstone is derived mostly by its rarity.

Pegmatite are igneous rocks found underground near sheets of igneous rocks called batholiths. They are a source of gemstones made of topaz, tourmaline, beryl spodumene and spessartine.

You might be interested in

Changing classes, you walk 20.0 m down a hall, turn left, and then walk 10.0 m down another hall. Define a coordinate system and

worty [1.4K]

Explanation:

Calculate position vectors in a multidimensional displacement problem. Solve for the displacement in two or three dimensions. Calculate the velocity vector

7 0

3 years ago

How do i get a bf and how do i start to talk to him? I have this one crush and we have not even said one word to each other, Hes

taurus [48]

First introduce yourself. Start talking to him little by little. Compliment him, that’ll help. Make some jokes, and talk about stuff he is interested in. Make conversation. Try not to be overbearing.

4 0

3 years ago

Read 2 more answers

An above ground swimming pool of 30 ft diameter and 5 ft depth is to be filled from a garden hose (smooth interior) of length 10

STALIN [3.7K]

This question involves the concepts of dynamic pressure, volume flow rate, and flow speed.

It will take "5.1 hours" to fill the pool.

First, we will use the formula for the dynamic pressure to find out the flow speed of water:

$P=\frac{1}{2}\rho v^2\\\\v=\sqrt{\frac{2P}{\rho}}$