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Arada [10]
2 years ago
15

A compound has a melting point of 812°C. what type of bonding is in the compound?

Physics
1 answer:
AURORKA [14]2 years ago
7 0

Answer:

Ionic compound.

Explanation:

812° C is a very high melting point. Such high melting points are generally ionic compound. Ionic compounds are have very strong bond between the elements ( electrostatic bond). In order to break this bond, large amount of heat energies are needed. So, they have high melting point. Also, Ionic compound are very good conductors of electricity.

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How much support force does a table exert on a book that weighs 15 N when the book is placed on the table?
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Answer:

15 N

Explanation:

According to Newton's third law of motion, to every action, there is an equal and opposite reaction. This reaction is equal in magnitude to the force acting but in an opposite direction.

Now, if the book weighs 15 N, an opposite equal force will be: N = -15 N

But the magnitude of this will be the absolute value which is 15N.

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Explain, using the kinetic theory of matter, why liquids and solids are more denser than gases
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2 years ago
An object accelerates from rest to velocity of 38m/s over a distance of 12m what was its acceleration ?
tankabanditka [31]

answer

60.1667 \frac{m}{s^2}

explanation

there are four main kinematic formulas that we use in physics

v_{f}= v_{o}+at\\x =\frac{t(v_{f}+v_o)}{2} \\x = v_ot + \frac{at^2}{2} \\{v_{f}}^2 = {v_o}^2 + 2ax

v_f = final velocity

v_o = initial velocity

a = acceleration

t = time

x = displacement

we use an equation based on what information we have

in this question, we have initial velocity (0), final velocity, (38), displacement (12), and we want to find acceleration

so we use the equation that includes v_o, v_f, x, a

which is this equation {v_{f}}^2 = {v_o}^2 + 2ax

rearrange to solve for a

{v_{f}}^2 = {v_o}^2 + 2ax\\{v_{f}}^2}-{v_o}^2 = 2ax\\a = \frac{{v_f}^2-{v_o}^2}{2x} \\

plug in values

a = \frac{{v_f}^2-{v_o}^2}{2x}\\\\a = \frac{{38}^2-{0}^2}{2*12}\\\\a = \frac{1444}{24} \\\\a = 60.1667

4 0
2 years ago
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