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
Elena-2011 [213]
3 years ago
5

A healthy astronaut's heart rate is 60 beats/min. Flight doctors on Earth can monitor an astronaut's vital signs remotely while

in flight.How fast would an astronaut be flying away from Earth if the doctor measured her having a heart rate of 21 beats/min?
Physics
2 answers:
Anton [14]3 years ago
5 0
GIVEN:
   60 beats per minute
   21 beats per minute
   find x= how fast would an astronaut be flying away
 1            x
-----   *  ------ = (60x = 21)  -------> 60x = 21    ------------>  x= 0.35 
60         21                                  -------   -----
                                                     60      60

The answer is 0.35 seconds which refers to how fast would an astronaut be flying away from the earth if he has a heart rate of 21 beats/min. 
amm18123 years ago
4 0

Answer:

2.81 x 10⁸ m/s

Explanation:

R₁ = rate of heartbeat on earth = 60 beats/min

T₁ = Time period for 1 beat on earth = 1/R₁ = 1/60 min = 60/60 sec = 1 sec  

R₂ = rate of heartbeat on location of astronaut = 21 beats/min

T₂ = Time period for 1 beat at the location of astronaut = 1/R₂ = 1/21 min = 60/21 sec

v = speed of astronaut

c = speed of light = 3 x 10⁸ m/s

Using the equation

T₁ = T₂ sqrt(1 - (v/c)²)

1 = (60/21) sqrt(1 - (v/(3 x 10⁸))²)

v = 2.81 x 10⁸ m/s

You might be interested in
Which compound is most likely a powerful and dangerous acid? H2S HBr Li2O LiBR
sattari [20]

HBr is the most powerful and dangerous acid .

Explanation:

A strong acid is one that instantly disunites or grants its protons in suspension. HBr is a strong acid. HBr is powerful than HCl or HF because the overlapping of a 1s-orbital and a 4p-orbital is surprisingly small, thus the binding is weak so splitting is very easy..

6 0
3 years ago
Read 2 more answers
Can someone pls help me with this? Its due in 25 minutes
olga_2 [115]

Answer:

Ty for the coins

Explanation:

3 0
2 years ago
Andy is waiting at the signal. As soon as the light turns green, he accelerates his car at a uniform rate of 8.00 meters/second2
ad-work [718]
38 i think it would be im prob wrong
5 0
2 years ago
EASY BRAINLIEST PLEASE HELP!!
Rudiy27

Answer:

I think the awnser is B (but don't qoute me on that)   if its right then yay but if its wrong im sorry

Explanation:

5 0
3 years ago
Read 2 more answers
If a football player collides with a goal post, what forces are at work?
AlekseyPX
When a footballer collides with the goal post, the forces at work are the action and reaction forces. The player will exert an action force on the goal post, and then a reaction force from the goal post will stop the player. The reaction force call will cause pain and even injury to the player.
7 0
2 years ago
Other questions:
  • What is the job of chlorophyll in photosynthesis?
    6·2 answers
  • Which change occurs when an atom undergoes decay?
    13·1 answer
  • You normally drive on the freeway between San Diego and Los Angeles at an average speed of 105 km/h (65mi/h), and the trip takes
    7·2 answers
  • What is the distance traveled by an object that moves with an average speed of 6.0 meters per second for 8.0 seconds
    15·1 answer
  • Consider a portion of a cell membrane that has a thickness of 7.50nm and 1.3 micrometers x 1.3 micrometers in area. A measuremen
    15·1 answer
  • A ladder 10 ft long rests against a vertical wall. If the bottom of the ladder slides away from the wall at a rate of 1.5 ft/s,
    15·1 answer
  • A boy of mass 50 kg exerts a pressure of 25000 pa calculate the area
    6·1 answer
  • A point charge of -3.0 x 10-C is placed at the origin of coordinates. Find the clectric field at the point 13. X= 5.0 m on the x
    8·1 answer
  • Please help me...physis question
    15·1 answer
  • . Find the magnitude of the force between two charges, where the first charge is -2µc and the second charge is 3.5µc separated b
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!