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3 years ago

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What effect does this gene mutation have on a person?

1 answer:

Helen [10]3 years ago

7 0

Answer:

Harmful mutations may cause genetic disorders or cancer. A genetic disorder is a disease caused by a mutation in one or a few genes. A human example is cystic fibrosis. A mutation in a single gene causes the body to produce thick, sticky mucus that clogs the lungs and blocks ducts in digestive organs.

Explanation:

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A piano has a mass of 99 kg. What is the weight of the piano?

Blababa [14]

Explanation:

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Achargingbullelephantwithamassof5240kgcomesdi- rectly toward you with a speed of 4.55 m/s. You toss a 0.150-kg rubber ball at th

Ierofanga [76]

Answer:

Given:

Mass of elephant = 5240 kg

The initial speed of the elephant = 4.55 m/s

Mass of the rubber ball, m, = 0.15 kg

Inital speed of the rubber ball, v = 7.81 m/s

On substitution in $V_{2f}$ = $[\frac{2m_{1} }{m_{1} +m_{2} } ]V_{1f}$ + $[\frac{m_{2}-m_{1}}{m_{1}+m_{2} } ] v_{2f}$

$V_{2f}$ = $[\frac{2*5240_{} }{5240_{} +0.15_{} } ](-4.55_{})$ + $[\frac{0.15_{}-5240_{}}{5240_{}+0.15_{} } ] (7.81_{})$

a) The negatıve sign shows that the ball bounces back in the direction opposite to the incident

b) it is clear that the velocity of the ball increases and therefore it is kinetic energy . The ball gains kinetic energy from the elephant.

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3 years ago

Rita places a 2.5 kg block on a frictionless inclined plane that is 30 degrees above horizontal. She applies a horizontal force,

vitfil [10]

Answer:

14.2

Explanation:

find horizontal force of the weight = 2.5kg x 9.8 Sin30 = 12.3 N

to prevent the sliding she needs to pull horizontally

Fh = 12.3 /Cos 30 =14.2N

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3 years ago