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
Alona [7]
2 years ago
8

When you ride a bicycle at constant speed, nearly all the energy you expend goes into the work you do against the drag force of

the air. Model a cyclist as having cross-section area 0.40 m2 and, because the human body is not aerodynamically shaped, a drag coefficient of 0.90.
What is the cyclist's power output while riding at a steady 7.3 m/s?
Physics
1 answer:
ratelena [41]2 years ago
8 0

Answer:

Power output = 96.506 watts

Explanation:

Drag coefficient (Cd) = 0.9

V = 7.3 m/s

Air density (ρ) = 1.225 kg/m^(3)

Area (A) = 0.45 m^2

Let's find the drag force ;

Fd=(1/2)(Cd)(ρ)(A)(v^(2))

So Fd = (1/2)(0.9)(1.225)(0.45)(7.3^(2)) = 13.22N

Drag power = Drag Force x Drag velocity.

Thus drag power, = 13.22 x 7.3 = 96.506 watts

You might be interested in
¿cual es la velocidad de un auto que recorre 4566 metros en 4 minutos? expresar en km\h
Svetlanka [38]

Explanation:

(4566 m / 4 min) × (1 km / 1000 m) × (60 min / h) = 68.49 km/h

3 0
3 years ago
A soccer ball collides with another soccer ball at rest. the total momentum of the balls
Juliette [100K]

I am pretty sure the answer is C.

4 0
3 years ago
Alex places 2 cubes side-by-side on a ramp made of wood. Cube #1 is ice and Cube #2 is wood
zmey [24]

Answer:

Explanation:

The sandpaper block did not move because the forces of friction and gravity were balanced.

6 0
3 years ago
Farmer Wilcox wants to reduce the wind velocity near his farm. He should _____.
IRISSAK [1]
Plant trees around the perimeter of his fields
3 0
3 years ago
Read 2 more answers
A force of 200N acts between two objects at a certain distance apart .the value of the force when the distance is halved is?
statuscvo [17]

Answer:

800N is the answer

Explanation:

hope it helps

6 0
2 years ago
Other questions:
  • When flying the LNAV approach, the missed approach point (MAP) would be indicated by reaching __________. A. an altitude of 3100
    5·1 answer
  • You are moving into an apartment and take the elevator to the 6th floor. Suppose your weight is 790 N and that of your belonging
    12·1 answer
  • A ray in oil (n = 1.52) reaches a boundary with water (n = 1.33) at 55.9 deg. Does it reflect internally or refract into the air
    7·1 answer
  • Check
    13·2 answers
  • All elements in the same group____
    12·1 answer
  • A satellite of mass m is in a circular orbit of radius R2 around a spherical planet of radius R1 made of a material with density
    6·1 answer
  • The terrestrial planets are made almost entirely of elements heavier than hydrogen and helium. According to modern science, wher
    6·1 answer
  • What can a human still do better and faster than any machine learning solution<br>​
    9·1 answer
  • What is the advantage of SI unit over CGS unit?​
    12·1 answer
  • The law of inertia states that a moving object will:.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!