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lakkis [162]
3 years ago
7

Can someone please help, ;w;?

Physics
2 answers:
SOVA2 [1]3 years ago
7 0
I believe the answer is 3). The cell wall provides protection, it doesn’t control movements of materials in and out of the cell.
damaskus [11]3 years ago
5 0
The correct answer is 3
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Assuming the average rate of heat energy flowing outwards from earth to be 0.063 W/m2 calculate the energy available at a hot sp
MaRussiya [10]

Answer:

"13.48 Kwhr" is the right solution.

Explanation:

The given values are:

Average rate of heat energy,

= 0.063 W/m²

Diameter,

= 8m

Efficiency of conversion,

= 50%

Now,

The area of hotspot will be:

⇒  A=\frac{\pi}{4} d^2

On substituting the values, we get

⇒      =\frac{3.14}{4} (8)^2

⇒      =0.785\times 64

⇒      =50.24 \ m^2

Total heat generation rate will be:

⇒  Q=q\times A

        =0.063\times 50.24

        =3.16 \ W

hence,

The electricity generation capacity will be:

⇒  P=\eta Q t

On substituting the values, we get

⇒      =0.5\times 3.16\times 8760

⇒      =13840.8 \ Whr

On converting into Kwhr, we get

⇒      =13.84 \ Kwhr

6 0
3 years ago
The term solstice translates as "Sun stop." Explain why this translation makes sense from an astronomical point of view. It make
adoni [48]

Answer:

It makes sense because on that the day  the sun stops moving northward and starts moving southward

Explanation:

4 0
3 years ago
Read 2 more answers
The school bag of four students A,B,C,D measures 9kg, 2800gm, 2kg and 8000gm respectively. Whose bag is the lightest
inna [77]

Answer:

Student C

Explanation:

order from heaviest to lightest is...

9 kg (A) , 8000g (8 kg) (D) , 2800g (2.8kg) (B), 2 kg (C)

5 0
3 years ago
Please left home at 8 AM to spend the day at in amusement park. He arrived at the park, which was 150 KM from his house, at 10 A
antiseptic1488 [7]

Answer:

v=\frac{150km}{2h}=75\frac{km}{h}

Explanation:

We can use the equation for the speed

v=\frac{x}{t}

where x is the distance and t the time. In this case we know that the time spent was 2 hours and the distance was 150km. By replacing we have

v=\frac{150km}{2h}=75\frac{km}{h}

I hope this useful for you

regards

3 0
3 years ago
What was created 300 years ago by scientist carolus linnaeus
Norma-Jean [14]
<span>the classification system</span>
6 0
3 years ago
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