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VARVARA [1.3K]
3 years ago
6

Which two elements have similar characteristics? Periodic Table OF The Elements

Biology
1 answer:
8_murik_8 [283]3 years ago
8 0

Answer:

Na and K

Explanation:

Every elements in the same group have similar chemical characteristics

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3 years ago
When a device is used in a circuit in which the voltage is 81 V, the current flowing through the device is 3 A. What is the resi
blondinia [14]

Answer:

The resistance of the device is 27Ω

Explanation:

When a device is used in a circuit in which the voltage is 81 V, the current flowing through the device is 3 A.

In order to calculate the resistance of the device, we know that the resistance is directly proportional to the voltage in the terminals of the device and the current flowing through it.

Using Ohm's law

R=\frac{V}{I} \\R=\frac{81V}{3A}=27Ω

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Vitamin ________ must be complexed with a protein called ________ to be absorbed from the small intestine.
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3 years ago
Which best explains how the collisions of materials in space contribute to the formation of layers in protoplanets?
Sedbober [7]

Answer:The best explanation is;

The materials undergo decay when they collide, which results in the heating and subsequent melting and rising of materials

Explanation: A protoplanet is an embryo formed in a protoplanetary disc which has passed through a melting phase that enables the formation layered interior

In protoplanets the effects of partial melting of the components due to heating produced by radioactive decay and  pressures from forces of gravity there is segregation of the melt and igneous composition such that the heavier melted metal can sink and be over laid by the lighter igneous rocks

Therefore, the best explanation is that the materials undergo decay when they collide, which results in the heating and subsequent melting and segregation by the sinking of the heavier melted materials and rising of the lighter igneous materials.

8 0
3 years ago
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