2 years ago

True or false. a wheel and axle are a rotating lever that move around an effort arm?

Chemistry

1 answer:

adelina 88 [10]2 years ago

7 0

Answer:

True

Explanation:

the machine shown in figure 9.9 is called a wheele and axle. It's a form of lever. the effort arm can rotate in a complete circle, which is the center of the axle.

You might be interested in

How many total orbitals are within the 3s 3p, and 3d sublevels of the third

vredina [299]

Answer: C

Explanation:

The one closest to the atomic center, there is a single 1s orbital that can hold 2 electrons. At the next energy level, there are four orbitals.

4 0

2 years ago

Read 2 more answers

How many mols of H2SO4 is in 0.80 L of 1.40 M H2SO4?

Hitman42 [59]

I think it’s 6 yw. Sorry if I’m wrong

7 0

2 years ago

When an electric field is applied to a metallic crystal, the movement of electrons is _____

Soloha48 [4]

random.

Hope this helps!

8 0

2 years ago

Read 2 more answers

The first task you are assigned in your summer laboratory job is to prepare a concentrated naoh stock solution. the molecular we

tensa zangetsu [6.8K]

240 g NaOH

<em>Step 1</em>. Calculate the moles of NaOH

Moles of NaOH = 0.750 L solution × (8 mol NaOH/1 L solution) = 6 mol NaOH

Step 2. Calculate the mass of NaOH

Mass of NaOH = 6 mol NaOH × (40 g NaOH/1 mol NaOH) = 240 g NaOH

7 0

2 years ago

Now let us refine our model by noting that there is a second source of Na+ ions in the cell: NaI. Suppose the outside of the cel

MArishka [77]

Answer:

$E=55mV$

Explanation:

Hello,

Considering the given information, the new concentration of Na+inside will be (13.6 + 4) mM = 17.6 mM, and outside will be (150 + 0.04) mM = 150.04 mM due to the previous specified conditions.

Now, the recalculation of the Nerst potential at the supposed temperature of 25 °C (which is modifiable) is done via:

$E=\frac{RT}{zF} ln(\frac{C_{Na^+,outside}}{C_{Na^+,outside}} )\\\\E=\frac{8.314\frac{J}{mol*K}*298K}{1*9.65x10^4\frac{C}{mol} } *ln(\frac{150.04}{17.6} )=0.055V*\frac{1x10^3mV}{1V} \\E=55mV$

Best regards.

8 0

2 years ago