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Zarrin [17]
3 years ago
7

Two ice skaters push off against one another starting from a stationary position. The 54.1-kg skater acquires a speed of 0.375 m

/s. What speed does the 60.0-kg skater acquire
Physics
1 answer:
asambeis [7]3 years ago
3 0

Answer:

0.338125 m/s

Explanation:

Applying,

Law of conservation of momentum

m'v' = mv............ Equation 1

Where m' = mass of the first skater, v' = velocity of the first skater, m = mass of the second skater, v = velocity of the second skater.

make v the subject of the equation

v = m'v'/m........... Equation 2

From the question,

Given: m' = 54.1 kg, v' = 0.375 m/s, m = 60 kg

Substitute these values into equation

v = (54.1×0.375)/60

v = 20.2875/60

v = 0.338125 m/s

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3 years ago
A large reflecting telescope has an objective mirror with a 14.0 m radius of curvature. What angular magnification in multiples
goldenfox [79]

Answer:

The magnification is  m =  -2.15

Explanation:

From the question we are told that

   The  radius is  r =  14.0 \ m

    The  focal length eyepiece is  f_e  =  3.25 \ m

Generally the objective focal length is mathematically represented as

        f_o  =  \frac{r}{2}

=>     f_o  =  \frac{14}{2}

=>     f_o  =  7 \ m

The  magnification is mathematically represented as

      m =  - \frac{f_o }{f_e }

=>    m =  - \frac{7 }{ 3.25 }

=>   m =  -2.15

5 0
4 years ago
I WILL MARK BRAINLIEST FOR THE FIRST PERSON TO ANSWER THESE QUESTIONS!!
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Answer:

1.A.) woman whose father was a United States citizen

2. A.) demonstrate the ability to read, write, and speak English

C.) pass a citizenship exam that tests one’s understanding of U.S. civics

D.) lawfully reside in the United States for at least five years

Explanation:

When you are born to at least one whom was a U.S citizen at time of birth then you automatically acquire U.S citizenship through acquisition process.This is not affected by the place of your birth maybe in the U.S or in another country.This claim is also true for foreign born adoptees to the United States.

A foreign born individual who is not automatically entitled to the United States citizenship can obtain this state through the naturalization procedure.It involves fulfilling the naturalization requirements such as being of the age 18 and above, being a permanent residence of the U.S for at least 5 years, being able to read, write and speak English, having basic knowledge of the U.S civics understanding, and but not least to being of good moral character.

6 0
4 years ago
A box with a total surface area of 1.88 m^2
Veseljchak [2.6K]

Answer:9.8x10^(-3) w/m°C

Explanation:

Quantity of heat(Q)=14.1w

Distance(d)=2.44cm=2.44/100=0.0244m

Area(a)=1.88m^2

Temperature change(t)=18.6°C

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3 years ago
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