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4 years ago

Please can someone help me!! It’s so important!!!

Physics

2 answers:

Leya [2.2K]4 years ago

3 0

1. is 75 km/h because 150 divided by 2 is 75

3. the second person since he ran the same distance in less time

4. a.True b.False c.True

wel4 years ago

3 0

well fattymama whatever her name is is running pretty fast but here we got peepee who's also running fast and if you add 100 to 100 you get 200, which fattymama was running, and 19 plus 19 is really exceptionally close to 40 by being 38 so CLEARLY peepee is faster

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A car travels 72 kilometers in 1 hour. Its average speed is

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In how many minds tho?

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3 years ago

Which shows the correct order of events after the big bang occurred? strong force separated from the unified force, inflationary

LUCKY_DIMON [66]

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C) gravity separated from the unified force, strong force separated from the unified force, inflationary expansion occurred, electromagnetic and weak forces separated from the unified force, quarks and electrons formed

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3 years ago

Matter is anything that takes up space and has mass. O A. True O B. False

nadezda [96]

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A.true

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3 years ago

Read 2 more answers

If the frequency of the disorder in the population is 0.000081, what is the percentage of heterozygous carriers?

patriot [66]

The frequency of the disorder in the population is 0.000081, So, the percentage of heterozygous carriers would be 0.018.

Unlike homozygous, being heterozygous means you have two different alleles. You inherited a different version from each parent. In a heterozygous genotype, the dominant allele overrules the recessive one. Therefore, the dominant trait will be expressed. The recessive trait won't show, but you're still a carrier.

The presence of two different alleles at a particular gene locus. A heterozygous genotype may include one normal allele and one mutated allele or two different mutated alleles.

The Hardy-Weinberg equation is given by :

⇒ p² + 2pq + q² = 1

Here, p and q represent the individual allele frequencies.

Therefore, p² = frequency of homozygous condition represented by p.

q² = frequency of homozygous alleles represented by q.

and 2pq = frequency of heterozygous condition.

So, the correct answer is '2pq'.

⇒ (aa) q² = 0.000081,

⇒ (a) q = 0.009,

⇒ (A) p = 0.991,

⇒ (Aa) 2pq,

⇒ 0.018.

To learn more about heterozygous carriers here

brainly.com/question/17458395

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8 0

2 years ago

Consider (a) an electron (b) a photon, and (c) a proton, all moving in vacuum. Choose all correct answers for each question. (iv

DiKsa [7]

Electron, photon and proton carry momentum .

De Broglie derived the relationship between the wavelength and momentum of matter. This relationship is known as de Broglie's relationship.
De Broglie's relationship is given by $\lambda=\frac{h}{mv}$ ...(1)
Momentum is the product of the mass of a particle and its velocity. Momentum is a vector quantity; i.e., it has both magnitude and direction.

Equation (1) can be written as $\lambda=\frac{h}{p}$ where λ is known as de Broglie wavelength and p is momentum , h = Plank’s constant

For photon , the momentum is given by $p=\frac{E}{c}$ ...(2) where c is the speed is the speed of light .

From equation (1) and (2) we can conclude that electron, photon and proton carry momentum .

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4 0

2 years ago