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
leva [86]
3 years ago
15

In the 2016 Olympics in Rio, after the 50 mm freestyle competition, a problem with the pool was found. In lane 1 there was a gen

tle 1.2 cm/scm/s current flowing in the direction that the swimmers were going, while in lane 8 there was a current of the same speed but directed opposite to the swimmers' direction. Suppose a swimmer could swim the 50.0 mm in 25.0 ss in the absence of any current.
Required:
a. How would the time it took the swimmer to swim 50.0 m change in lane 1?
b, How would the time it took the swimmer to swim 50.0 m change in lane 8?
Physics
1 answer:
gogolik [260]3 years ago
6 0

Answer:

Explanation:

still water speed is 50 m / 25.0 s = 2.00 m/s or 200 cm/s

In lane 1 the effective speed would be 201.2 cm/s

5000 cm / 201.2 cm/s = 24.85 s

The change is 25.00 - 24.85 = 0.15 s decrease in time

In lane 8, the effective speed would be 198.8 cm/s

5000 cm / 198.8 cm/s = 25.15 s

The change is 25.00 - 25.15 = 0.15 s increase in time

You might be interested in
If you pull a wool sweater over your head, you will often end up with a wild hairdo. Your hair is hard to comb and wants to stan
Sergio [31]
Becasue when you rubbed your hair while you were putting on your sweater it caused it to rub against together causing electricity thingy lol. and thats why your hair goes straigh tup.
5 0
3 years ago
What makes a magnet on the atomic level?
yanalaym [24]

Answer:

Magnetism at atomic /sub - atomic levels is mostly due to charged particles called electrons. Electrons have spin which give them angular momentum and thus a magnetic moment associated with it. That is the cause of Magnetism at atomic levels. Electrons fill up orbitals in atoms in pairs.

4 0
3 years ago
Oxidation reactions in biological systems generally involve
sesenic [268]

Answer: addition of electrons and hydrogen ions. loss of electrons and addition of hydrogen ions. loss of electrons and either addition or loss of hydrogen ions.

3 0
3 years ago
Which of these are broken down during chemical, but not physical, changes?
Doss [256]

I think your answer is D

because you already said its not a B is a liquid and  not a solid so its harder to have a chemical change C is solutions and D is compound and I know for a fact that a compound is a solid and if C is also a solid then that could also be a possible answer choice.

5 0
2 years ago
The best way to prevent heat exhaustion while exercising is to
algol13
Take breaks and drink plenty of water not to much because it will make you sick sorry apparently pu ke is a bad word.
8 0
3 years ago
Other questions:
  • What drives plate tectonics in the earths interior
    8·2 answers
  • How can I feel pain when I hit a table with my bare hands (Physics)
    5·1 answer
  • How much work will it take to lift a 2-kg pair of hiking boots 2 meters off the
    15·2 answers
  • At what distance from the centre of the earth its acceleration due to gravity becomes one third only? [Mass and radius of earth
    9·2 answers
  • What are the layers of the Earth's atmosphere?
    13·2 answers
  • If a ball is thrown straight up into the air, what is its acceleration as it moves upward? What is its acceleration when it reac
    7·2 answers
  • It is a general exercise that we do before practicing sports activities<br><br> worm-up or cool down
    13·2 answers
  • A horizontal applied force of magnitude 25 N acts on a block sliding on a horizontal surface. The force of friction between the
    8·1 answer
  • Atoms that have a positive charge will be attracted to atoms with a
    5·1 answer
  • a generator produces a maximum emf of 240 v when rotating at 3.7 rad/s in a magnetic field of 0.200 t. if the coil has 822 loops
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!