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tiny-mole [99]
3 years ago
10

How much heat is needed to raise the temperature of 7g of Water by 20° C

Physics
1 answer:
beks73 [17]3 years ago
6 0

the answer to your question is 10.5 kJ

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La respuesta sería 200Hz

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3 years ago
Friction occurs when the ____ and ____ of two surfaces grind against each other.
monitta

Friction occurs when the surfaces and heat of two surfaces grind against each other.

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7 0
3 years ago
Point charges q1 and q2 are separated by a distance of 60 cm along a horizontal axis.
amm1812

Answer:

38 cm from q1(right)

Explanation:

Given, q1 = 3q2 , r = 60cm = 0.6 m

Let that point be situated at a distance of 'x' m from q1.

Electric field must be same from both sides to be in equilibrium(where EF is 0).

=> k q1/x² = k q2/(0.6 - x)²

=> q1(0.6 - x)² = q2(x)²

=> 3q2(0.6 - x)² = q2(x)²

=> 3(0.6 - x)² = x²

=> √3(0.6 - x) = ± x

=> 0.6√3 = x(1 + √3)

=> 1.03/2.73 = x

≈ 0.38 m = 38 cm = x

8 0
3 years ago
Is this equation balanced? 2HCl + CaCO3 → CaCl2 + H2O + CO2
Serggg [28]

Answer:

Yes it is

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the sum moles at the left side equals the sum of moles at the right side

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I think the answer should be: “100.4957 N”
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