1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
aleksandrvk [35]
3 years ago
15

There are two twins. One twin wants to explore the planet near Proxima Centauri and leaves on a spaceship traveling at 90% of th

e speed of light, while the other twin stays home on Earth. How much does the twin on Earth age while the other twin travels to Proxima Centauri?
Mathematics
1 answer:
miskamm [114]3 years ago
7 0

Answer:

<em>4.7 years</em>

Step-by-step explanation:

Distance of planet from Earth = 1.3 parsec

We know that 1 parsec = 3.26 light years

And a light year is the distance traveled by light in time period of 1 year.

So, Distance of planet from Earth = 1.3 \times 3.26 = 4.24 light years

Given that, the person travels at a speed equal to 90% of the light speed.

To travel to the planet from Earth, Light takes 4.24 years.

To travel the distance D, at a speed s light takes time of 4.24 years.

To travel the distance D, at a speed 0.90s, the person takes time:

\dfrac{4.24}{0.90} = \bold{4.7\ years}

So, the twin on Earth ages by <em>4.7 years.</em>

You might be interested in
Which fraction is equivalent to 50%? (in simplest fraction form) A) 1 2 B) 1 4 C) 2 5 D) 4 5
Tatiana [17]

Answer:

1/2 is equivalent to 50%

Step-by-step explanation:

In order to convert a fraction to a percentage you divide the numerator (Top number of a fraction) by the denominator (Bottom number of a fraction), multiply by 100, and add a percentage sign.

So lets try that with our first answer option A) 1/2:

1 divided by 2 = 0.5

0.5 x 100 = 50

50%

So we know that 1/2 is equivalent to 50%

8 0
3 years ago
Solve the system of equations by graphing, elimination or
vladimir1956 [14]

Answer:

Solve the system of equations by graphing, elimination or

subod

Step-by-step explanation:

8 0
2 years ago
Use the net to determine the total surface area. The net of a prism with width 10 inches, length 5 inches, and height 7 inches i
leva [86]
We are asked to solve for the surface area of the described figure in the problem. We can conclude that the given figure is a rectangular prism since it was being mentioned in the problem that the height is laid flat. Therefore, the formula for the surface area is SA = PH + 2B where "P" stands for the perimeter of the rectangle and "B" stands for the area of the rectangle while "H" is for the height.
Solving for P, we have it:
P = width + length + width + length
P = 10 + 5 + 10 + 5
P = 30 inches
Solving for B, we have it:
B = length * width 
B = 10 * 5
B = 50 inches squared
Solving for the surface area, we have it:
SA = PH + 2B
SA = 30*7 + (2*50)
SA = 310 inches squared

The answer is 310 in2.
6 0
3 years ago
Read 2 more answers
Write an equation for the nth term of the arithmetic seqeuence. Then find a10 100,110,120,130...​
elixir [45]

Answer:

Step-by-step explanation:

N= 100+n(10)

8 0
3 years ago
The instructions on the bag on concrete mix say to add 2 gallons of water to each 8 pounds bag of conceit mix
tiny-mole [99]

Answer:

4 pound

Step-by-step explanation:

From the question :

2 gallons of water = 8 pound bag

Number of pound bag per gallon of water ;

Let the number of pound = x

Using cross multiplication, we'll have :

2 gallons = 8 pounds

1 gallon = x pounds

Cross multiply

2x = 8

x = 8 /2

x = 4

Hence, 1 gallon of water mixes 4 pound bag of concrete.

3 0
2 years ago
Other questions:
  • Henry wants to get a job this summer. He can either mow lawns or work in the local library. What is the opportunity cost if he d
    15·2 answers
  • Please help, this is due in 5 minutes
    14·1 answer
  • I need help on number 4. Please help me!
    13·1 answer
  • Grades can be converted into numbers ( as in calculating a GPA where an A=4, B=3,C=2, D=1, and F=0
    13·1 answer
  • Ab + c = d solve for a
    10·2 answers
  • Solve using elimination or substitution method
    11·1 answer
  • The original price of a mountain bike was reduced by $125. If p = the mountain bike's original price in dollars, which algebraic
    15·2 answers
  • A student was given an assignment to determine the percentage of students that brought a bag lunch to school. The student chose
    9·2 answers
  • Can someone please help with the Surface Area of this. I need the right answer so that i wont get murdered by my mom and so i ca
    8·2 answers
  • order to estimate the average time spent on the computer terminals per student at a university, data were collected for a sample
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!