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larisa86 [58]
3 years ago
10

A device for exercising the upper leg muscle is shown above, together with a schematic representation of an equivalent lever sys

tem. calculate the force exerted by the upper leg muscle to lift the mass at a constant speed.
Physics
1 answer:
yuradex [85]3 years ago
4 0

yo mamaaaaaaaaaaaaaaa

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3 m/s
zloy xaker [14]

Answer:

0.75Hz

Explanation:

Given parameters:

Speed of the wave = 3m/s

Wavelength  = 4m

Unknown:

Frequency of the wave  = ?

Solution:

The speed of a wave is given by the expression below:

     Speed  = frequency x wavelength

  Frequency  = \frac{Speed }{Wavelength}   = \frac{3}{4}    = 0.75Hz

5 0
3 years ago
Mention any two effects of force​
Lyrx [107]
Pull and motion effects :)
3 0
3 years ago
A moving walkway at an airport has a speed v1 and a length L. A woman stands on the walkway as it moves from one end to the othe
bearhunter [10]

Answer:

t=L/V_1

Explanation:

<u>solution:</u>

Let E be an observer, and B a second observer traveling with velocity V_{BE}  as measured by E. If E measures the velocity of an object A as V_{AE}  then B will measure A velocity as

V_{AB} = V_{AE} -  V_{BE}  

Applied here,

the walkway (W) and the man (M) are moving relative to Earth (E}, the velocity of the man relative to the moving walkway is

V_{MW} = V_{ME} -  V_{WE}  

V_1=V_{WE},

V_2=V_{MW}

The time required for the woman, traveling at constant speed V_1 relative to the ground, to travel distance L relative to the ground is :

t=L/V_1

 

3 0
4 years ago
A cylindrical container with a cross-sectional area of 85.2 cm 2 holds fluid having a density of 806 kg/m 3 . The surface of the
Anton [14]

Answer:

the answer would be B your welcome

Explanation:

5 0
3 years ago
A biochemical process that liberates energy content of food for living organs
jok3333 [9.3K]
Hello! 

The <span>biochemical process that liberates energy content of food for living organs is called catabolism.

Catabolism is a process in which big molecules like those in the food we eat are broken down into small ones that can be used by the living organism to obtain energy. The energy that is liberated in this process is stored in molecules of adenosine triphosphate (ATP). These molecules are used by cells to produce energy in the process called cellular respiration, catalyzed by the enzyme ATPase. 

Have a nice day!
 </span>
5 0
3 years ago
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