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MAVERICK [17]
3 years ago
5

A book falls off a shelf.

Physics
1 answer:
LUCKY_DIMON [66]3 years ago
3 0

Answer:

B) Just before it strikes the ground.

Explanation:

The kinetic energy of the book is the highest right before it hits the ground because all of the stored potential energy the book had on the shelf is converted to kinetic energy right at the bottom of the shelf (but before it hits the ground, otherwise, the KE would be 0 because the book would have zero velocity).

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In the reaction C6H12 + ________ O2----> 6H20 + 6CO2, what coefficient should be placed in front of 02 to balance the reactio
Alborosie
All you need to do is count the number of Oxygen the Products:
In 6H2O, you have 6 oxygen, and in 6CO2, you have 6 Dioxygen so 12 Oxygen. So a total of 12 + 6 = 18 atoms of Oxygen, or 9 atoms of dioxygen.
So the coefficient that should be placed in front of O2 to balance the reaction is 9:
C6H12 + 9O2 ---> 6H2O + 6CO2

Hope this Helps! :)
7 0
4 years ago
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There is no Explanation. Look at the answer.

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Which characteristics is common in mature rivers river
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A tightly sealed glass jar is an example of which type of system?
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D. hope it helps. :D

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4 years ago
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Garrick rubs an inflated balloon against his hair. He then touches the balloon against a non-conducting wall.
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Answer:

Figure A

Explanation:

At first, the inflated balloon is rubbed against the hair.

In this situation, the balloon is charged by friction: because of the friction between the surface of the balllon and the hair, electrons are transferred from the hair to the surface of the balloon.

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Then, the balloon is placed in contact with the non-conducting wall.

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Because the wall is made of a non-conducting material (=isolant), the charges cannot move easily through it. Therefore, even though the charges on the wall feel a force due to the presence of the electrons in the balloon, they will not redistribute along the wall.

Therefore, the charges on the wall will remain equally distributed, as shown in figure A.

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4 years ago
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