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3 years ago

12

Sodium and potassium are positively charged ions called cations, and chloride and phosphate form negatively charged ions called

anions.
Select one:
True
False

1 answer:

Alecsey [184]3 years ago

7 0

Sodium and potassium are positively charged ions called cations, and chloride and phosphate form negatively charged ions called anions. is true!

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Which combination of a wire coil and a core would make the weakest

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Answer: B

Explanation:

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3 years ago

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What is the current in a 160V circuit if the resistance is 2Ω? V= I= R =

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Answer:

80 amperes

Explanation:

Current in the circuit = ?

Voltage in the circuit = 160 Volts

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Voltage = Current x Resistance

V = IR

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I = 160V / 2 Ω

I = 80 Amperes

Therefore the current in the circuit is 80 amperes :)

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3 years ago

What is the half life-life of your 100 atoms of Carbon-14?

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Answer:

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2 years ago

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Answer:

Part a)

Width of the slit is

$a = 580 nm$

Part b)

Ratio of intensity is given as

$\frac{I}{I_o} = 0.81$

Explanation:

Part a)

As we know by the formula of diffraction we will have

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so we have

$\theta = 90$

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so we will have

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Part b)

As we know that the intensity in diffraction pattern is given as

$I = I_o (\frac{sin\theta}{\theta})^2$

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so for angle 45 degree

$\frac{I}{I_o} = (\frac{sin45}{\pi/4})^2$

$\frac{I}{I_o} = (\frac{sin45}{\pi/4})^2$

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3 years ago

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Answer:

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2 years ago