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Darina [25.2K]
4 years ago
7

You exert of force of 75 newtons on a rock. You push and you push, but you can't budge it. You are exhausted! How much work did

you perform?
Physics
2 answers:
Rama09 [41]4 years ago
7 0
A force is a push or pull upon an object resulting from the object's interaction with another object. Whenever there is an interaction between two objects, there is a force upon each of the objects. When the interaction ceases, the two objects no longer experience the force. Forces only exist as a result of an interaction
Sidana [21]4 years ago
5 0
Work = force x distance
distance = 0, work = 0
no work done
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In a population of Mendel's garden peas, the frequency of dominant yellow-flowered plants is 50%. The population is in Hardy-Wei
Zielflug [23.3K]

Answer:

The correct answer is:

0.25

Explanation:

Since, the frequency of dominant yellow-flowered plants is 50% (i.e. 50/100 = 0.5) therefore, the frequency of dominant allele is 0.5 and recessive allele is 0.5 .

Lets say dominant allele is P and recessive allele is q.

According to the Hardy-Weinberg equilibrium, the frequency of dominant yellow-flowered plants is determined by the following formula:

2Pq

Substituting the frequency of dominant and recessive allele in the above formula: 2(0.5)(0.5) = 0.5

Similarly, according to the Hardy-Weinberg equilibrium, the frequency of  homozygous recessive genotype in the population is determined by the following formula:

q2

Substituting the frequency of dominant and recessive allele in the above formula: (0.5)2 = (0.5)(0.5) = 0.25

In this way, the frequency of homozygous recessive allele is calculated with the help of Hardy-Weinberg equilibrium.

7 0
4 years ago
Which is the answer
sammy [17]

Answer:

no idea thanks you veryuch

7 0
3 years ago
Why do water molecules tend to stay together and hold their shape? Name and explain the phenomenon by which this happens
vekshin1

Answer:

because liquid and solid states of water possesses intermolecular force of attraction which held the molecules of water in fixed

7 0
3 years ago
An experiment tests the effect of one thing on another using?
alukav5142 [94]
Dependent and independent variables.
7 0
3 years ago
There are 1,660 megawatts of wind-generated electricity produced globally every year. This amount is equivalent to A. 1,660,000
disa [49]
Let us first write down the known things .

1660 megawatts = 1660 X 10^6 watt
                           = 166000 kilowatt

From the above deduction we can conclude that the correct option among all the options that are given in the question is the second option or option "B". I hope that this is the answer that you were looking for and the answer has actually come to your desired help.
5 0
3 years ago
Read 2 more answers
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