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2 years ago

The chemical symbol for sulfuric acid is H2SO4. How many atoms are contained in each molecule of sulfuric acid?

1 answer:

5 0

You know from looking at the molecular formula that one molecule of H2SO4 contains 2 atoms of hydrogen, 1 atom of sulfur and 4 atoms of oxygen.

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Your gender identity includes your __________. (Select all that apply.)

earnstyle [38]

The last one - biological attributes

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3 years ago

What is net force on them ?

lions [1.4K]

Netforce= 32-16
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2 years ago

True or false please help me on this

grin007 [14]

Answer: Pretty sure False Have a good day :)

Explanation:

7 0

2 years ago

Read 2 more answers

How much force is required to accelerate a 50 kg mass at 2 m/s2?

-BARSIC- [3]

=0.5 x40
= (calculate it) 
2. F= -.45 x 41 
= 
3. F=20 x 12 
= 
4. F=50 x 30 
= 

I believe you can go on from here, remember its easy 

for the last 2 just rearange the formual 
for 9 it will be a=F/m and 10. m=f/a

4 0

3 years ago

Approximate the skin friction drag on a 1m long by 60 cm diameter cylinder, located axially in a wind tunnel, when the air speed

TiliK225 [7]

Answer:

The drag force is $1.76\times10^{-2}\ N$

Explanation:

Given that,

Diameter = 60 cm

Length = 1 m

Air speed = 4.5 m/s

Temperature = 50°C

We need to calculate the Reynolds number

Using formula of Reynolds number

$R_{e}=\dfrac{vl}{\mu}$

Put the value into the formula

$R_{e}=\dfrac{4.5\times1}{1.900\times10^{-5}}$

$R_{e}=2.368\times10^{5}$

We need to calculate the drag coefficient

Using formula of drag coefficient

$C_{d}=\dfrac{2\times0.646}{\sqrt{R_{e}}}$

Put the value into the formula

$C_{d}=\dfrac{2\times0.646}{\sqrt{2.368\times10^{5}}}$

$C_{d}=0.002655$

We need to calculate the drag force

Using formula of drag force

$F_{d}=\dfrac{1}{2}\times C_{d}\times\rho\times A\times v^2$

Put the value into the formula

$F_{d}=\dfrac{1}{2}\times0.002655\times1.095\times0.6\times1\times(4.5)^2$

$F_{d}=0.01766\ N$

$F_{d}=1.76\times10^{-2}\ N$

Hence, The drag force is $1.76\times10^{-2}\ N$

3 0

3 years ago