Answer:
Explanation:
The flow entering the first segment will be the same as the flow exiting the second segment, and in both cases it will be equal to the velocity multiplied by the area of the segment. If 
and Flow = VxA, then you have:
(1)
You can also calculate the transversal area of each segment, because blood vessels are cylinders and you know each segment's diameter. The formula to calculate this is:
Replacing d for each segment you have:
Now, replacing these values on (1), you have:
This means that velocity in the second segment is 15.4 times the velocity in which blood entered the first segment.
Answer:
Heat energy does not cool. Objects cool. Energy is not an object. Now, what happens when an object cools is that it gives off some of its thermal energy by one or more mechanisms: radiation, conduction, or convection. In radiation the energy escaped the object as electromagnetic waves - you see the red hot poker slowly dim as it cools, in conduction the energy is transferred Mechanically by the atoms of the hot object being in physical contact with those of the cool object and in convection the hot material moves to a cooler region where it gives up its heat energy by either radiation or conduction.
Answer:
3.74 mm
Explanation:
From coulomb's law,
F = kqq'/r²............... Equation 1
Where F = force, q and q' = the two charges, r = distance between the two charges, k = proportionality constant.
making r the subject of the equation
r = √(kqq'/F)...................... Equation 2
Given: q = q' = 90 nC = 90×10⁻⁹ C, F = 5.20 N, k = 9.0×10⁹ Nm²/C²
Substitute into equation 2,
r = √(90×10⁻⁹ )².√(9.0×10⁹/5.2)
r = 90×10⁻⁹.√(17.31×10⁸)
r = (90×10⁻⁹)(4.16×10⁴)
r = 374.4×10⁻⁵ m
r = 3.74 mm
Hence the distance between the charge = 3.74 mm
Answer:
(a) 8.4375 s
(b) 1409.06 ft
(c) 40.55 seconds
Explanation:
v’(t)=a(t)=60t therefore
For first three seconds
Since motion is vertical and we take upward direction as positive, acceleration is negative hence
a(t)=-32 and 
but since at t=0 then v=270 hence c=270
-32.2t+270=0 hence
t=270/32=8.4375 s
(b)
and since s(0)=270 then
(c)
v(15)=-32(14)+270=-178 ft/s
Average speed in the next 5 seconds becomes 
The altitude is 914-490=424 ft
Time when rocket hits ground
Total time=3+14+23.6=40.55 seconds
<span>An object will continue to travel at a constant speed unless acted on by an unbalanced force, and for every force acted on there is an equal and opposite reaction in the other way. So, the speed and direction of the object will be changed.</span>
