In the cells of the human body oxygen molecules are used directly in a process that?

Answers

Answer 1

Answer: In the cells of the human body oxygen molecules are used directly in the process of respiration, because the cells of your body needs oxygen in order to break down food and make energy.

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Question 2 of 10
Which illustration represents low accuracy and low precision?

Answers

The illustration represents low accuracy and low precision is according to option D.

What is accuracy?

When in an experiment, a value is measured 5 times, then if the values measured are same for most of the time or like three times out of five, it said to be accurate. The phenomenon is accuracy.

Precision is about comparing the values to each other then find them near to each other.

Accuracy compares the experimental value to the theoretical value.

So, when all the values are close to each other but not nearest to the theoretical value, then it is said to be precise but not accurate.

Thus, the correct option for low accuracy and precision is D.

Learn more about accuracy.

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Answer:

D is the correct answer

Explanation:

A) shows low accuracy and high precision since they missed the bull's-eye but are all grouped together.

B) Shows high accuracy and high precision

C) Shows high precision

D is the only one that shows both low accuracy and low precision

The parallel plates in a capacitor, with a plate area of 8.50 cm2 and an air-filled separation of 3.00 mm, are charged by a 6.00 V battery. They are then disconnected from the battery and pulled apart (without discharge) to a separation of 8.00 mm. Neglecting fringing, find (a) the potential difference between the plates, (b) the initial stored energy, (c) the final stored energy, and (d) the work required to separate the plates

Answers

Answer:

(a). The charge is $1.5045*10^(-11)\ C$

(b). The initial stored energy is $4.5135*10^(-11)\ J$

(c). The final stored energy is $12.036*10^(-11)\ J$

(d). The work required to separate the plates is $7.5225*10^(-11)\ J$

Explanation:

Given that,

Area = 8.50 cm²

Distance = 3.00 mm

Potential = 6.00 V

Distance without discharge = 8.00 mm

(a). We need to calculate the capacitance

Using formula of capacitance

$C_(1)=(\epsilon_(0)A)/(d)$

Put the value into the formula

$C_(1)=(8.85*10^(-12)*8.5*10^(-4))/(3.00*10^(-3))$

$C_(1)=2.5075*10^(-12)\ F$

We need to calculate the charge

Using formula of charge

$Q=CV$

Put the value into the formula

$Q=2.5075*10^(-12)*6.00$

$Q=1.5045*10^(-11)\ C$

(b). We need to calculate the initial stored energy

Using formula of initial energy

$E_(i)=(1)/(2)* CV^2$

$E_(i)=(1)/(2)*2.5075*10^(-12)*36$

$E_(i)=4.5135*10^(-11)\ J$

(c). We need to calculate the capacitance

Using formula of capacitance

$C_(2)=(\epsilon_(0)A)/(d)$

Put the value into the formula

$C_(2)=(8.85*10^(-12)*8.5*10^(-4))/(2*8.00*10^(-3))$

$C_(2)=9.403*10^(-13)\ F$

We need to calculate the final stored energy

Using formula of initial energy

$E_(f)=(1)/(2)* (Q^2)/(C)$

$E_(f)=(1)/(2)*((1.5045*10^(-11))^2)/(9.403*10^(-13))$

$E_(f)=12.036*10^(-11)\ J$

(d). We need to calculate the work done

Using formula of work done

$W=E_(f)-E_(i)$

Put the value in the formula

$W=12.036*10^(-11)-4.5135*10^(-11)$

$W=7.5225*10^(-11)\ J$

Hence, (a). The charge is $1.5045*10^(-11)\ C$

(b). The initial stored energy is $4.5135*10^(-11)\ J$

(c). The final stored energy is $12.036*10^(-11)\ J$

(d). The work required to separate the plates is $7.5225*10^(-11)\ J$

Which of the following best describes the magnetic field lines around an isolated, permanent bar magnet?A. The field lines go from the magnet's south pole into its north pole.
B. The field points out along radial lines from the bar magnet, extending straight out to infinity.
C. The field lines go from the magnet's north pole into its south pole.
D. The field points straight into the bar magnet along radial lines that extend to infinity.

Answers

Correct Answer:
Option C. The field lines go from the magnet's north pole into its south pole.

The magnetic field lines of a magnet always emerge from its North pole and enter back in the south pole, as shown in the image attached with.
Therefore, option C is the correct answer

Answer:

Explanation:

A Newton is 1 kgm/s^2 . Is this a fundamental unit or a derived unit?

Answers

The kilogram, the meter, and the second are the fundamental units.
When you mash them together in just the right way, the 'newton' is
derived from them.

Question 2 ) Ally sliced 32 kg of water melon for a party . She divided the watermelon slices equally between 8large bowls. How many grams of watermelon did Ally put in each bowl?

Answers

32kg divided by 8 is equal to 4kg.
4kg converted to grams is:
4 x 1000, so
Ally put 4000 grams of Watermelon in each bowel.

A lithium oxide compound is represented by which formula?

Answers

Li2O is the molecular formula for lithium oxide.

the answer is Li2O

good luck

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