What is the primary role of the respiratory system in living organisms?

Which of the following is the number 0.0000302 written in scientific notation?

lana [24]

Answer:

3.02 x 10⁻⁵ unit

Explanation:

The numbers written in scientific notations have some rules to follow.
If the scientific values are expressed in exponential powers of 10, the integer value should be between 1 and 9. The respective powers will be added to the exponential order.
The scientific notation is the convenient form of expressing the scientific values that could be easily used in the calculations.
The digits after the decimal point are used according to the resolution of the scientific values.

7 0

3 years ago

A nonconducting ring of radius R is uniformly charged with a total positive charge q. The ring rotates at a constant angular spe

kipiarov [429]

The magnitude of the magnetic field on the axis of the ring (1/2)R from its center is [ μ₀ ωqR² ] / [2.5(√5)πR ].

The magnetic influence on moving electric currents, electric charges, and magnetic materials is described by a magnetic field, which is a vector field. When a charge moves through a magnetic field, a force that is perpendicular to both its own velocity and the magnetic field operates on it.

The radius of the nonconducting ring is R.

The ring is uniformly charged q.

The angular speed of the ring is ω.

The ring is x = (1/2)R from the center of the ring.

The magnetic field on the axis of a current loop is given as:

B = [ μ₀ IR² ] / [4π(x² + R²)^{3/2} ]

Now, I = q / [2π/ω]

When x = R/2 the magnitude of the magnetic field is:

B = [ μ₀ ωqR² ] / [4π( x² + R²)^{3/2} ]

B = [ μ₀ ωqR² ] / [4π( ( R/2 )² + R² )^{3/2} ]

B = [ μ₀ ωqR² ] / [4π( [5/4]R² )^{3/2} ]

B = [ μ₀ ωqR² ] / [2.5(√5)πR ]

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6 0

2 years ago

You are walking back toward the back of a bus that is moving forward with a constant velocity. Describe your motion relative to

HACTEHA [7]

Answer: Relative to the bus, you are stationary. Relative to a point on the ground, you are walking forward with velocity equal to the velocity of the bus.

As a person walks toward the back of a bus, they are walking towards a stationary object according to their own perspective. However, from an outside perspective, the bus is moving forward with a constant velocity and so relative to that point in motion, you are actually walking backwards with respect to it. This difference in motion means you would not be able have the same experience as the person on the bus when getting off because when you get off you would stop while they continue going forward. The last sentence could be considered a footnote because it only applies if this was an actual situation rather than just an analogy question in a physics test.

7 0

3 years ago

Assortative mating changes ______ frequencies but does not change ______ frequencies.

andrew-mc [135]

Allele frequencies are unaffected by assortative mating, but genotype frequencies .

<h3>Assortative mating: </h3>

Individuals with similar phenotypes and genotypes mate with others more frequently than is anticipated under a random mating pattern in assortative mating, which is a mating pattern and a type of sexual selection.

<h3>Frequencies of genotypes:</h3>

A population's genotype frequency is calculated by dividing the number of people having a particular genotype by the overall population size. The genotype frequency in population genetics is the frequency or ratio (i.e., 0 f 1) among genotypes inside a population.

<h3>The frequency for alleles in biology:</h3>

The term "allele frequency" describes the prevalence of an allele in a population. It is calculated by calculating the number of times the allele occurs in the population and dividing by the sum of all the gene copies.

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4 0

1 year ago

The difference in potential between the cathode and anode of a spark plug is 14700 v. what energy does the electron give up as i

Verdich [7]

The energy the electron gives up passing between the electrodes is equal to the product between its charge and the potential difference between the electrodes:
$\Delta U = e \Delta V$
where
e is the electron charge
$\Delta V$ is the potential difference

Plugging numbers into the equation, we find that the electron gives up is
$\Delta U = (1.6 \cdot 10^{-19} C)(14700 V)=2.35 \cdot 10^{-15} J$

8 0

4 years ago