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2 years ago

Laura pushes on the pedals of her bike

Biology

1 answer:

Lelu [443]2 years ago

8 0

Answer: 2

Explanation:- Mechanical advantage is the ratio of the output force to the input force.

Mechanical advantage= $\frac{\text {output force}}{\text {input force}}$

Given:

Input force = 320 N

output force= 640 N

${\text {Mechanical advantage}}=\frac{640N}{320N}=2$

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Mr. Zee is prescribed an inhaled nasal steroid to relieve his symptoms associated with seasonal allergies. What is true about in

Lelu [443]

Answer:

The provided question is incomplete as there is no option available however the generalized answer would be -

The correct answer would be - For treating the global symptoms related to the allergies, it is known as that the inhaled nasal steroids are far more effective than oral medications.

Explanation:

Nasal steroids are the steroids that relieve congestion problems by decreasing the inflammation in the nose of an individual. These are then inhaled by the nose which directly sprays into nasal passages.

In comparatively the oral steroids take time to show their impact on the individual and even the impact is considered not as effective as the inhaled nasal sprays.

Thus, the correct answer is - For treating the global symptoms related to the allergies, it is known that inhaled nasal steroids are far more effective than oral medications.

4 0

2 years ago

If you wanted to combine equal numbers of Na and Cl atoms in a flask, how much Cl would you have to add if you added 23g of NA?

Gwar [14]

Answer: The mass of chlorine atom required to combine is 35.5 grams.

Explanation:

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ .....(1)

For sodium:

Given mass of sodium = 23 g

Molar mass of sodium = 23 g/mol

Putting values in equation 1, we get:

$\text{Moles of sodium}=\frac{23g}{23g/mol}=1mol$

According to mole concept:

1 mole of an atom contains $6.022\times 10^{23}$ number of particles

So, 1 mole of sodium will contain = $(1\times 6.022\times 10^{23})=6.022\times 10^{23}$ number of atoms

Number of atoms of chlorine = Number of atoms of sodium = $6.022\times 10^{23}$ = 1 mole

Now, calculating the mass of chlorine required by using equation 1:

Moles of chlorine = 1 mole

Molar mass of chlorine = 35.5 g/mol

Putting values in equation 1, we get:

$1mol=\frac{\text{Mass of chlorine}}{35.5g/mol}\\\\\text{Mass of chlorine}=(1mol\times 35.5g/mol)=35.5g$

Hence, the mass of chlorine atom required to combine is 35.5 grams.

5 0

3 years ago

Describe how so much variety has been created in a single species of animal using artificial selection.

stepan [7]

Answer:

Artificial selection is the identification by humans of desirable traits in plants and animals, and the steps taken to enhance and perpetuate those traits in future generations. Artificial selection works the same way as natural selection, except that with natural selection it is nature, not human interference, that makes these decisions.

Explanation:

3 0

2 years ago

The flesh-eating bacteria, vibrio vulnificus, destroys healthy tissue. infectious agents such as this are best classified as wha

Ivan

The possible answers are
1. Abiotic environmental
2.Biotic environmental
3.Genetic
4.Pathogenic

The correct answer is 2.
There are two groups of environmental factors, the abiotic factors like temperature and biotic factors that refer to the effects that living beings have on each other.
The flesh-eating bacteria, Vibrio vulnificus is a living organism affecting another organism by attacking its healthy flesh, therefore this effect is classified as a biotic environmental factor.

7 0

3 years ago

What is the side effect of asthma

STatiana [176]

Wheezing, lose breath easily, sometimes hurts to breathe if you do vigorous activities.

8 0

2 years ago

Read 2 more answers