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TEA [102]
3 years ago
5

N the reactants of the general form of the single replacement reaction, the 'B' represents a _________ cation.

Physics
2 answers:
IrinaVladis [17]3 years ago
7 0

1. Metallic

2. A, B

3. Unreactive

these are all right.

bekas [8.4K]3 years ago
3 0

ANSWER:

1. metallic

2. A,B

3. ureactive

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I believe the answer should be the last option. upon interaction, both objects should have the same charge after the electrons are transferred.
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What is the name of the system that standardizes measurements in science
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Explanation:

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Choose true or false for each statement regarding a parallel plate capacitor.. The voltage of a disconnected charged capacitor i
OlgaM077 [116]

Answer:

Explanation:

The voltage of a disconnected charged capacitor increases when the plate area is decreased.

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So the statement is true.

The electric field is dependent on the charge density on the plates.

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So the statement is true .

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3 years ago
Vector ????⃗ has a magnitude of 16.6 and is at an angle of 50.5∘ counterclockwise from the +x‑axis. Vector ????⃗ has a magnitude
natka813 [3]

Answer:

For vector u, x component = 10.558 and  y component =12.808

unit vector = 0.636 i+ 0.7716 j

For vector v, x component = 23.6316 and y component = -6.464

unit vector = 0.9645 i-0.2638 j

Explanation:

Let the vector u has magnitude 16.6

u makes an angle of 50.5° from x axis

So u_x=ucos\Theta =16.6\times cos50.5=10.558

Vertical component u_y=usin\Theta =16.6\times sin50.5=12.808

So vector u will be u = 10.558 i+12.808 j

Unit vector u=\frac{10.558i+12.808j}{\sqrt{10.558^2+12.808^2}}=0.636i+0.7716j

Now in second case let vector v has a magnitude of 24.5

Making an angle with -15.3° from x axis

So horizontal component v_x=vcos\Theta =24.5\times cos(-15.3)=23.6316

Vertical component v_y=vsin\Theta =24.5\times sin(-15.3)=-6.464

So vector v will be 23.6316 i - 6.464 j

Unit vector of v =\frac{23.6316i-6.464}{\sqrt{23.6316^2+6.464^2}}=0.9645i-0.2638j

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What two characteristics are used to classify air masses
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Answer: Temperature and humidity are the two characteristics used to classify air masses.

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