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rewona [7]
3 years ago
8

8 a Name the bones that articulate (join together) in the knee joint

Physics
1 answer:
Marianna [84]3 years ago
8 0

Answer:

The Femur and the Tibia

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What's the definition of wavelength?
mario62 [17]
The Wavelength is the distance between the same points on two adjacent (neighbouring) disturbances (e.g. from crest to crest or from compression to compression) i.e. one full cycle of the wave.
4 0
3 years ago
A light-rail commuter train blows its 200 Hz horn as it approaches a crossing. The speed of sound is 339 m/s. (a) An observer wa
ddd [48]

Answer:

a) 30.82 m/s

b)  183.33 Hz

Explanation:

a)

V = speed of the sound = 339 m/s

v = speed of the train = ?

f' = observed frequency by the observer = 220 Hz

f = actual frequency of the observer = 200 Hz

using the equation

f' = \frac{fV}{V - v}

220 = \frac{(200)(339)}{339 - v}

v =  30.82 m/s

b)

V = speed of the sound = 339 m/s

v = speed of the train = 30.82 m/s

f'' = observed frequency by the observer as train moves away = ?

f = actual frequency of the observer = 200 Hz

using the equation

f'' = \frac{fV}{V + v}

f'' = \frac{(200)(339)}{339 + 30.82}

f'' = 183.33 Hz

3 0
3 years ago
An effort of 200 N is used to lift a load of 800 N by using a lever. If the load is at a distance of 40 cm from the fulcrum then
Alchen [17]

The effort distance​ will be 160 cm.Applying the moment at the center as follows will provide the effort distance:

<h3 /><h3>What is the mechanical advantage?</h3>

Mechanical advantage is a measure of the ratio of output force to input force in a system, it is used to obtain the efficiency of forces in levers and pulleys.

Given data;

Effort,\rm F_e=00 N

Load,\rm P= 400 \ N

Distance from the fulcrum,\rm d=40 \ cm

The effort distance​ is found by applying the moment at the center as;

\rm F_e \times d= P \times  d' \\\\ 200 \  N \times d'=800 \ N \times 40 \ cm \\\\ d'=160 \ cm

Hence, the effort distance​ will be 160 cm

To learn more about the mechanical advantage refer to the link;

brainly.com/question/7638820

#SPJ1

7 0
2 years ago
Use F = 1/T as your basis:
Varvara68 [4.7K]
  • Time=T=8×10^-5s

Now

\\ \rm\rightarrowtail \nu=\dfrac{1}{T}

\\ \rm\rightarrowtail \nu=\dfrac{1}{8\times 10^{-5}}

\\ \rm\rightarrowtail \nu=0.125(10^5)

\\ \rm\rightarrowtail \nu=12500s^{-1}

\\ \rm\rightarrowtail \nu=12500Hz

6 0
3 years ago
Are waves created by vibration
dezoksy [38]

Answer: yes wave are created by vibration because if there anit any vibration then the water cant move

Explanation:

8 0
3 years ago
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