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3 years ago

How do trees stay please help

Chemistry

2 answers:

Amanda [17]3 years ago

4 0

Answer:

Because they have strong roots, they remain stuck in the ground.

Explanation:Because they have strong roots, they remain stuck in the ground.

tensa zangetsu [6.8K]3 years ago

4 0

Answer:

They stay stuck to the ground by roots

Explanation:

I hope that was what you were looking for

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A person's heartbeat is 73 beats per minute. If his heart beats 3.1e9 times in a lifetime, how long does the person live?

tiny-mole [99]

Answer: The person lived for 80.66 years.

Explanation:

Heart beat of the person = 73 beat /min

Number of total heart beats = $3.1\times 10^{9}$

Life span of the person : $\frac{\text{Total heart beats of the person}}{\text{Heart beat per minute}}=\frac{3.1\times 10^{9} beats}{73 beat/min}$

1 year =525600 mins

Life span = $0.0424\times 10^{9} min=80.66 years$

The person lived for 80.66 years.

7 0

3 years ago

A 143.1 g sample of a compound contains 53.4 g of carbon, 16.9 g of hydrogen, 43 g of nitrogen, and some amount of oxygen. what

nika2105 [10]

I'm fairly sure this is it 20.82%

6 0

3 years ago

Read 2 more answers

Convert 59,800 cg/L to g/mL

alexgriva [62]

To convert the given value to the desired one, use the proper unit conversions and dimensional analysis. Use the following conversion for the first set.

1 g = 100 cg
1 L = 1000 mL

Using the concept presented above,

V = (59800 cg/L)(1 g/100 cg)1 L/1000 mL)
V = 0.598 g/mL

6 0

3 years ago

Arrange the following gases in order of increasing average molecular speed at 25 °C.

Vlad [161]

Answer:

I think my answer is

d. N2

8 0

2 years ago

A temperature difference of 15°C is impressed across a brick wall of a house which is 15 cm in thickness. The thermal conductivi

zubka84 [21]

Answer:

Q=7200 W

q=7200/72=100 $W/m^2$

Explanation:

Given that

ΔT=15° C

Thickness ,t=15 cm

Thermal conductivity ,K=1 W/m.°C

Height,h=6 m

Length ,L=12 m

As we know that heat conduction through wall given as

$Q=\dfrac{KA}{t}\Delta T$

Now by putting the values

A= 6 x 12 =72 $m^2$

$Q=\dfrac{KA}{t}\Delta T$

$Q=\dfrac{1\times 72}{0.15}\times 15\ W$

Q=7200 W

Q is the total heat transfer.

Heat flux q

q=Q/A $W/m^2$

q=7200/72=100 $W/m^2$

q is the heat flux.

As w know that heat flux(q) is the heat transfer rate from per unit area and on the other hand heat transfer(Q) is the total heat transfer from the surface.

Heat flux q=Q/A

That is why these both are different.

6 0

2 years ago