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3 years ago

Before you touch a wire in an appliance how should you make sure that it is not energized

Chemistry

2 answers:

kotykmax [81]3 years ago

4 0

Hey There!

The device used to determine if there is energy in a wire is called a clamp meter, this device would detect if there are any presents currents in the wire. In order to use this device, you would simply have to attach it on the wire you are testing for.

Another device used to detect energy from wires is called a a non-contact voltage detector. While this device does not operate on all types of wires, it is solely created for AC circuits. Though, it is not preferred to manage the wire as this device sometimes proves to not be very reliable.

Thank you for posting your question with Brainly!

kodGreya [7K]3 years ago

3 0

Answer:by checking for voltage with a neon tester

Explanation:

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Answer:

Carbon

Explanation:

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2 years ago

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Why is water considered a pure substance and not a mixture?

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Water is made of only one molecule which can be chemically separated into hydrogen and oxygen. The answer is D.

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If you dissolve 8.50 g of ca(no3)2 in 755 ml of distilled water what is the concentration in molarity of the calcium nitrate sol

Zanzabum

Molarity is defined as the number of moles of solute in 1 L of solution
the mass of Ca(NO₃)₂ present - 8.50 g
therefore number of moles of Ca(NO₃)₂ - 8.50 g / 164 g/mol = 0.0518 mol
the volume of solution prepared is 755 mL
therefore if there are 0.0518 mol in 755 mL
then in 1000 mL the number of moles - 0.0518 mol / 0.755 L
molarity is therefore - 0.0686 M

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3 years ago

Balance this equation. Not all spots have to have a number.

Lisa [10]

2Na+2H2O----2NaOH+H2

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2 years ago

For a steel stack that exhausts 1,200 m3/min of gases at 1 atm and 400 k, calculate the inner diameter if you are designing for

bonufazy [111]

The inner diameter for a steel stack that exhausts 1,200 m3/min of gases at 1 atm and 400 k is 1.45 m

<h3>What is Stack Height ?</h3>

Stack height means the distance from the ground-level elevation at the base of the stack to the crown of the stack.

If a stack arises from a building or other structure, the ground-level elevation of that building or structure will be used as the base elevation of the stack.

Given is a steel stack that exhausts 1,200 cu.m/min of gases

P= 1 atm and

T= 400 K

maximum expected wind speed at stack height of 12 m/s

The formula for the diameter of chimney

$\rm d=\sqrt{\dfrac{4Q}{\pi v} }$

Q =1200 cu.m/min

= 1200 * 0.0166 = 19.92 cu.m/sec

Velocity = 12m/s

$\rm d=\sqrt{\dfrac{4\times 19.92}{3.14*12} }\\$

d= 1.45 m

Therefore The inner diameter for a steel stack that exhausts 1,200 m3/min of gases at 1 atm and 400 k is 1.45 m.

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2 years ago