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Lelechka [254]
2 years ago
9

Wavelength is 6.25x10^7 m whats the frequency

Biology
1 answer:
DochEvi [55]2 years ago
5 0

Answer:

\huge\boxed{\sf f=4.8 \ Hz}

Explanation:

<h3><u>Given Data:</u></h3>

Wavelength = λ = 6.25 × 10⁷ m

Speed of light = c = 2.998 × 10⁸ m/s

<h3><u>Required:</u></h3>

Frequency = f = ?

<h3><u>Formula:</u></h3>

\displaystyle f=\frac{c}{\lambda}

<h3><u>Solution:</u></h3>

Put the givens in the formula.

\displaystyle f=\frac{2.998 \times 10^8}{6.25 \times 10^7} \\\\f=0.48 \times 10^1\\\\f=4.8 \ Hz\\\\\rule[225]{225}{2}

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Thorns and small hairs on plant stems and leaves help to
Mkey [24]

The correct answer is - physically dettering herbivory, protection from frost, and minimizing evaporation.

The plants have developed multiple traits that help them in multiple different circumstances, and some of those traits are the thorns and the hairs on their steams and leaves.

The thorns primarily serve for protection of the plant. They are very sharp and give a painful sting (occasionally poisonous one), so they are a physical protection from the herbivores that would try to eat parts of the plants.

The hairs have multiple functions. They are like a coat that helps the plant to not be affected by frost, help to stop the evaporation, and also partially manage to stop most of the insects that feed on plants.

6 0
3 years ago
Read 2 more answers
Consider the scenarios described below. Match the concept described by the scenario with the theory.
astraxan [27]

Answer:

1 - natural selection

2 - uniformitarianism

3- inheritance of acquired characteristics

4 - catastrophism

Explanation:

1. Natural selection refers to the evolution of organism or changes in the characterstics of organism depending on the environmental conditions. Hence, the lizard moved on fantasy island evolved with larger head and stronger bites as per the environmental condition.

2. The concept of Uniformitarianism states that the natural geological processes happening in present have already occured in past with same intesity and rate. Hence, geologist uses the phrase "The present is the key to the past" for  formation of mountain, rock formation and water movements.

3. Inheritance of acquired characteristics are the characteristic acquird by the ancestors and transmitted that gradually acquired characteristic to their progeny. Hence, the rats acquire the charactieristics and transfered it to the next generations.

4. Catastrophism means the regular occurrence of meteorological and geological disturbances to explain the existence the fossil record. Hence, teh mass exticiton due to asteroid impact is an example of Catastrophism.

So, the correct options in sequential order is natural selection, uniformitarianism, inheritance of acquired characteristics, and catastrophism.

3 0
3 years ago
1. Negative feedback is bad for your body. True or false 2. Both negative and positive feedback works in a loop. True or false.
andrezito [222]

Answer:

1. False

2. True

3. True

4. True

Explanation:

Negative feedback (or balancing feedback) happens when some capacity of the yield of a framework, cycle, or system is taken care of in a way that will in general decrease the variances in the yield, regardless of whether brought about by changes in the input or by different unsettling influences.

Though certain feedback will in general prompt unsteadiness through outstanding development, wavering or disorganized conduct, negative feedback for the most part advances steadiness. Negative feedback will in general elevate a settling to balance, and diminishes the impacts of bothers. Negative feedback loops in which the perfect measure of adjustment is applied with ideal planning can be entirely steady, exact, and responsive.

6 0
3 years ago
which of the following best describes why invertebrates isn't considered a scientifically valid word when classifying animals​
Nutka1998 [239]
Taxonomy used to have two groups of vertebrates and invertebrates. But invertebrates are far more diverse when it comes to the phylogenetic tree. Vertebrates all share same characteristic which is a back bone made of vertebrae, but invertebrates don’t share a common anatomical structure that all have; they are radically different in structure so they can’t be grouped in a single group. You have Arthropoda, which all have jointed limbs and segmented bodies and molt their cuticles. There’s Cnidaria, which most have tentacles and nematocysts and are radially symmetrical. And Mollusca, which have a muscular foot and a part of their body called a mantle. All these groups are invertebrates, but there’s nothing they share in common WITHOUT referring to the fact that they don’t have vertebrae. So basically that’s just an example why they can’t be grouped into one category; they all have different characteristics and are placed in different areas of the animal kingdom’s phylogenetic tree. Hope this helps
6 0
3 years ago
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bearhunter [10]

Answer:

B. Public libraries with lots of books.

4 0
3 years ago
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