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Korvikt [17]
3 years ago
5

Why is powdered or ground up quartz used as an abrasive?

Physics
2 answers:
lara [203]3 years ago
8 0

Explanation:

The high hardness of quartz, seven on the Mohs Scale, makes it harder than most other natural substances. As such it is an excellent abrasive material. Quartz sands and finely ground silica sand are used for sand blasting, scouring cleansers, grinding media, and grit for sanding and sawing.

MrRa [10]3 years ago
3 0

Explanation:

The high hardness of quartz, seven on the Mohs Scale, makes it harder than most other natural substances. As such it is an excellent abrasive material. Quartz sands and finely ground silica sand are used for sand blasting, scouring cleansers, grinding media, and grit for sanding and sawing

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Light year is a unit of?
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Light year is the unit of distance. It is the distance that an object travels in one year with the speed of light.

In short, Your Answer would be "Distance"

Hope this helps!
3 0
3 years ago
A car traveling at 40 m/s starts to decelerate steadily. It comes to a complete stop in 5 seconds. What is its acceleration? m/s
SCORPION-xisa [38]
Acceleration =

           (change of speed)  /  (time for the change).

Change of speed = (speed at the end) - (speed at the beginning)

                          =      ( zero )  -  (40 m/s)

                           =        -40 m/s .

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8 0
3 years ago
Which quantity Has the same unit as potential difference
adelina 88 [10]

Answer:

Voltage.

Explanation:

8 0
3 years ago
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nika2105 [10]
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7 0
3 years ago
A ship anchored at sea is rocked by waves that have crests Lim apart the waves travel at 70m/S, at what frequency do the waves r
inessss [21]

Question: A ship anchored at sea is rocked by waves that have crests 100 m apart the waves travel at 70m/S, at what frequency do the waves reach the ship?

Answer:

0.7 Hz

Explanation:

Applying,

v = λf............... Equation 1

Where v = velocity of the wave, f = frequency fo the wave, λ = wavelength of the wave

make f the subject of the equation

f = v/λ................. Equation 2

From the question,

Given: v = 70 m/s, λ = 100 m ( distance between successive crest)

Substitute these values into equation 2

f = 70/100

f = 0.7 Hz

Hence the frequency at which the wave reach the ship is 0.7 Hz

3 0
3 years ago
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