Average speed = Distance traveled / time taken
In this case Time taken = Difference in hours between 3 PM and 9 AM
= 6 hours
Total distance traveled = 350 km + 250 km
= 600 kilometers
So average speed = 600/6 = 100 km/hr
Average speed of bus = 27.78 m/s
So the bus's average speed = 27.78 m/s or 100 km/hr.
C 1.6 amps hipe this helps
Answer:
the total cross-sectional area of the capillaries is greater than the total cross-sectional area of the arteries or any other part of the circulatory system.
Explanation:
Blood velocity is not the same in all areas. In the capillaries it is where there is less speed, while in arteries and veins it is quite similar. This is due to the cross-sectional area of each of the vessels. It is a mistake to think of a vein, artery or capillary individually. We have to put them all together to see that the total area of the capillaries is 100 times larger than that of the arteries or veins. Blood flowing through arteries or veins is going faster because there is less area.
Blood velocity is inversely proportional to each of the areas of its territories. The greater the area, the lower the speed.
Answer:
The velocity is 
Explanation:
From the question we are told that
The frequency of the signal sent out is 
The frequency of the signal received is 
The speed of sound is 
Generally the frequency of the sound received is mathematically represented as
![f_r = f_s [\frac{v_s + v}{v_s - v} ]](https://tex.z-dn.net/?f=f_r%20%3D%20%20f_s%20%20%5B%5Cfrac%7Bv_s%20%20%2B%20v%7D%7Bv_s%20%20-%20v%7D%20%5D)
where v is the velocity of the object
=> ![40 *10^{3} = 38 *10^{3} * [\frac{341 + v}{341 - v} ]](https://tex.z-dn.net/?f=40%20%2A10%5E%7B3%7D%20%3D%20%2038%20%2A10%5E%7B3%7D%20%2A%20%20%20%5B%5Cfrac%7B341%20%20%2B%20v%7D%7B341%20%20-%20v%7D%20%5D)
=> 
=> 
=> 
=> 