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
navik [9.2K]
3 years ago
11

If one horsepower is equal to 746 watts, how much horsepower does a highly trained athlete generate by doing 340 joules of work

per second for an hourOne
Physics
1 answer:
astraxan [27]3 years ago
6 0

746 joules per second = 746 watts = 1 horsepower

340 joules per second = 340 watts = (340/746) = <em>0.456 horsepower</em>

Power is a RATE or a SPEED of doing work.  

How long you do it doesn't matter.  

Just like 30 miles per hour doesn't change whether you do it for an hour or for 10 minutes.

You might be interested in
HELPP ME IN PHYSICS +15 POINTS!! <br> But a right answer not links or I’ll report. -_-
frozen [14]

The answer shud be 31 . 14m

8 0
3 years ago
A boy throws a stone straight upward with an initial speed of 15m/s. What maximum height will the stone reach before falling bac
Vitek1552 [10]
height=\frac{velocity^2}{2gravity}\\\\&#10;velocity=15\frac{m}{s}\\\\&#10;g=9,8\frac{m}{s^2}\\\\height=\frac{15^2}{2*9,8}=\frac{225}{19,6}\\\\&#10;\boxed{height=11,48\ meters}
6 0
3 years ago
Use the facts below to answer the question: Who reaches One-Eyed Willie’s pirate ship first?
Sergio [31]
Listen if you have to cheat for the dba thing not worth even doing that dba tbh this is very easy as I just did it in like 5 minutes it gives you everything you need even the formulas so use your f  .u .c .k. 1  .n g brain you monkey...
5 0
3 years ago
You have probably noticed that carrying a person in a pool of water is much easier than carrying a person through air. To unders
Kruka [31]

Answer:

The answer is "0.91238 and 744.8"

Explanation:

In this scenario it is easier to take a person to the water-pool than to transport the people in the air, as the person's strength is increased by water upwards:

f_b \to m \to mg =person \\\\F_B \ in\  air = v\ & air\  g \\\\

               =0.076 \times 1.225 \times 9.8 \\\\ =0.91238 \ N\\\\

F_B \ in \ water = v  \& water \ g \\\\

                    =0.076 \times 1000 \times 9.8\\\\= 744.8 \ N\\

6 0
2 years ago
he atomic radii of Li and O2- ions are 0.068 and 0.140 nm, respectively. (a) Calculate the force of attraction in newtons betwee
Crazy boy [7]

Answer:

a

 F =  -1.07 *10^{-8} \  N

b

F_r  =  1.07 *10^{-8} \  N

Explanation:

Generally the force of attraction between this two irons is mathematically represented as

F =  \frac{k *  [Q_{Li}  ] * [Q_{O}  ]  }{ r^2}

Here k is known as the proportionality constant with value k = 2.31  *  10^ {-28} J \cdot m

substituting -2 for Q_{O} i.e the charge on oxygen , +1 for Q_{Li} i.e the charge on Lithium and [0.140 + 0.068 ] nm= 0.208 nm =  0.208*10^{-9} for r

So

F =  \frac{ 2.31  *  10^ {-28}*  +1   * -2   }{ ( 0.208*10^{-9} )^2   }

F =  -1.07 *10^{-8} \  N

Generally the force of repulsion will be the magnitude but different direction to the force o attraction

So Force of repulsionn is

F_r  =  1.07 *10^{-8} \  N

6 0
3 years ago
Other questions:
  • (Will give brainliest answer)
    7·2 answers
  • A girl with mass m1 and a sled with mass m2 are on the frictionless ice of a frozen lake, a distance d apart but connected by a
    9·1 answer
  • ( Science ) If the sun is far away then why does it look like we get higher than it when we lift a camera high in the sky?
    15·1 answer
  • Question 10 of 10
    10·1 answer
  • Examine MSDS for hydrogen peroxide 3% and hydrogen peroxide 30% from the same manufacturer. Compare the information contained in
    10·2 answers
  • A boat is headed due north on a river that's flowing directly east. What is the general direction of travel for this boat with r
    5·2 answers
  • How is physical change different from a chemical change?
    6·1 answer
  • calculate the work done by 2N force directed at 30 degree to the vertical to move a 500g box a horizontal distance of 400 cm acr
    13·1 answer
  • Two shuffleboard disks of equal mass, one orange and the other yellow, are involved in an elastic, glancing collision. The yello
    9·1 answer
  • Please, can somebody help me with this project? I'll give brainlest for the best answer! (Do not answer if you don't know or onl
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!