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Ksivusya [100]
2 years ago
9

7. The periodic table has changed over time as new elements have been added to it. Which

Biology
1 answer:
damaskus [11]2 years ago
6 0

Answer:

it will be the answer B. scientists discover new elenents.

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terry physics pushes a 75kg lab cart so that is accelerates from rest with a velocity of 4.4m/s in 3.1 secounds. what is the for
svetlana [45]

106.5N

Explanation:

Given parameters:

Mass of cart = 75kg

Velocity = 4.4m/s

time taken = 3.1s

Unknown:

Force = ?

Solution:

To solve this problem, we are going to apply newton's second law of motion. The law states that "the acceleration of a body is directly proportional to the force on the body and inversely proportional to the mass".

      F = m  x   a

F = force on body

m = mass of body

a = acceleration of the body

 But we know that acceleration is the change in velocity with time of a body;

     a  = \frac{change in velocity }{time}

  F = m x \frac{V}{t}

V is the velocity

t is the time taken

   F = \frac{75  x  4.4}{3.1}   = 106.5N

learn more:

Newton's law brainly.com/question/11411375

#learnwithBrainly

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2 years ago
Which best describes how mRNA is produced in a cell
Alex787 [66]
A. mRNA is made by RNA polymerase, using DNA as a template.
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A group of nursing students is reviewing the similarities and differences between bulimia nervosa and binge eating disorder (bed
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I'm not sure of the options listed but: clients typically are obese and clients refrain from purging behaviors.

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3 years ago
The sex chromosomes for a male are?
Artyom0805 [142]

Answer:

well i only know that a male has 23 chromosomes and his hormones are called testosterone ,please follow me and his sex chromosome is <em><u>xy</u></em>

8 0
2 years ago
How are carbohydrate polymers formed?
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Cells build carbohydrate polymers by using energy to form glycosidic linkages, the bonds between monosaccharides. A dehydration synthesis reaction forms a bond between carbon atoms in two monosaccharides, sandwiching an oxygen atom between them and releasing a water molecule. Hope this helps!
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