Atruck is moving around a circular curve at a uniform velocity of 13 m/s. if the centripetal force on the truck is 3,300 n and the mass of the truck is 1,600 kg, what's the radius of the curve?

a. 81.94 m
b. 348.56 m
c. 109.09 m
d. 6.30 m

The answer is  m.

Centripetal force (F) is a force that makes body move around a circular curve. The unit of force is N (N = kg * m/s²).

It can be represented as:

where:
m - mass
v - velocity
r - radius of the curve

We have:
m = 1,200 kg
V = 20 m/s
F = 6,000 N = 6,000 kg * m/s²

We need radius of the curve:
r = ?

So, if  , then:
    
⇒ 
⇒ 
⇒ 
⇒ 

The Correct answer to this question for Penn Foster Students is: 81.94m

ans.

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steps of dna fingerprinting includes extraction of dna from sample, amplification of dna, restriction digestion of amplified dna, and then analysis of dna by gel electrophoresis, respectively.

thus, the next step performed by the scientist is 'to cut the amplified dna (obtained by polymerase chain reaction) by restriction enzymes that cleave the dna into fragments and their analysis.'