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2 years ago

6

Which tool is used to hold workpieces tightly so that both of your hands can be free to work on them? A. Snap-ring pliers B. Nee

dlenose pliers C. Vise D. Bench

2 answers:

gizmo_the_mogwai [7]2 years ago

8 0

A vice, you can tighten it and then work on what is held in it without having to hold it still or in the position you want.

Natasha_Volkova [10]2 years ago

6 0

C. A view to hold it tight so you can work on it!

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Fill in the blanks for

lara [203]

Answer:

Balanced forces are equal in size and opposite in direction. When forces are balanced, there is no change in motion. In one of your situations in the last section, you pushed or pulled on an object from opposite directions but with the same force. You observed that the object did not move.

Explanation:

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7 0

2 years ago

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What is the molarity of HCl if 34.81 mL of a solution of HCl contain 0.3297 g of HCl?

Temka [501]

Answer:

0.2598 M

Explanation:

Molarity is mol/L, so we have to convert the grams to moles and the mL to L. To convert between grams and moles you need the molar mass of the compound, which is 36.46g/mol.

$0.3297gHCl*\frac{1molHCl}{36.46gHCL} = 0.00904279 mol HCl$

$34.81 mLHCl * \frac{1L}{1000L} = 0.03481 L HCl$

$\frac{0.00904279molHCl}{0.03481 L HCl} = 0.25977554 mol/L$

Round to the lowest number of significant figures = 0.2598 M

6 0

2 years ago

the amount of pollution produced by cars was measured for cars using gasoline containing different amounts of lead. what is the

natulia [17]

Independent: Gasoline with different amounts of lead
Dependent: Amount of pollution produced

4 0

2 years ago

Answer fast please <br> Which is a tissue?

lina2011 [118]

Answer:

the last picture on the right (kinda red-ish)

Explanation:

First picture: organ

Second picture: system

Third picture: organism

Last picture: tissue

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6 0

2 years ago

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calculate the speed of an electron if its de broglie wavelength is twice its displacement in one second

valkas [14]

Answer:

The speed of an electron is 0.01908 m/s.

Explanation:

De-Broglie wavelength is given by:

$\lambda=\frac{h}{mv}$

where, $\lambda$ = wavelength of a particle

h = Planck's constant = $6.626\times 10^{-34}Js$

m = mass of particle

v = velocity of the particle

Velocity of an electron = v

Mass of an electron = $9.1\times 10^{-31}kg$

Wavelength of electron is twice the displacement in seconds which is velocity of an electron.

Then.wavelength of an electron = $\lambda =2v$

$\lambda =2v=\frac{6.626\times 10^{-34}Js}{9.1\times 10^{-31}kg\times v}$

v = 0.01908 m/s

The speed of an electron is 0.01908 m/s.

5 0

2 years ago