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zhuklara [117]
3 years ago
5

Which of the materials would be able to scratch Quartz

Physics
1 answer:
Lelechka [254]3 years ago
7 0
<span>anything harder than mohs scale 7 so eg Topaz, Corundum and diamond representing mohs scale 8 9 and 10 respectively.</span>
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While ice melts, it remains at 0 °C, and the liquid water that is formed with the latent heat of fusion is also at 0 °C. The heat of fusion for water at 0 °C is approximately 334 joules per gram, and the heat of vaporization at 100 °C is about 2,230 joules per gram. So it will be C

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Which ball has the greater acceleration at the instant of release
melisa1 [442]
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3 years ago
What could be a possible explanation why tectonic plates do not all move in the same direction
antiseptic1488 [7]

Answer:

tectonic plates move in opposite direction

Tectonic plates are not necessarily moving in opposite directions, but if there directions are different they form plate boundaries. If they were moving in the same direction they would become the same plate. The more opposite the direction, the more obvious the fault.

Examples of plate boundaries:

Divergent: moving away from each other - mid-Atlantic ridge

Convergent: moving towards each other - the Himalayas (Indian plate subducting under the Eurasian plate forcing up the mountains)

Transform: sliding laterally along each other - San Andreas fault

6 0
3 years ago
As a train accelerates away from a station, it reaches a speed of 4.6 m/s in 5.2 s. If the train's acceleration remains constant
Svet_ta [14]

Answer:

Vf = 10.76 m/s

Explanation:

Train kinematics

The train moves with uniformly accelerated movement

V_f = V_o + a*t Formula (1)

Vf: Final speed (m/s)

V₀: Inital speed (m/s)

t: time in seconds (s)

a: acceleration (m/s²)

Movement from t = 0 to t = 5.2s

We replace in formula (1)

4.6 = 0 + a*5.2

a = 4.6/5.2 = 0.88 m/s²

Movement from t = 5.2s to t = 5.2s + 7s = 12.2s

We replace in formula (1)

V_f = 4.6 + 0.88*7

Vf = 10.76 m/s

3 0
3 years ago
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