The charge on the conductor is +24 μC, since the charge is positive, same amount of charge but it will be negative.
That is - 24 μC.
To know the number of electrons, we know that the charge of an electron =
-1.6 * 10^-19 C.
= - 24 μC / (-1.6 * 10^-19 C)
= (-24 * 10^-6) / (-1.6 * 10^-19 C) Use your calculator
= 15 * 10^13
= 1.5 * 10 ^14 Electrons.
Answer:
Betty
Explanation:
Since they're both on the most sequence but Betty is more luminous than Wilma, Betty must be located to a higher place on the most sequence. Therefore, Betty encompasses a hotter surface temperature, is more massive, and encompasses a larger radius. Betty also will evolve faster than Wilma, and if they were formed at the identical time Betty will put off the most sequence first
Answer
Initial radius of the artery is (1.1 cm) / 2 = 0.55 cm
final radius of the artery is (0.90 cm) / 2 = 0.45 cm
initial velocity of the blood is 17 cm/s
Using equation of continuity is
A₁v₁=A₂v₂
π r₁² x v₁ = π r₂² x v₂
r₁² x v₁ = r₂² x v₂
0.55² x 17 =0.45² x v₂
v₂=25.39 cm/s
Bernoulli's equation is
rho is the density of blood = 1060 kg/m^3
Answer:
8.4 m/s
Explanation:
The toy completes 10 circle in 30 seconds. So its frequency of revolution is
The periof of revolution is the reciprocal of the frequency, so
The radius of the circular path is
r = 4.0 m
So the total distance covered by the toy in one circle is the length of the circumference:
And so the average speed is
We all know that the sound travels faster through solids and then liquids and then through gases.
As far as i know solids are the medium through which the sound travels fast.
But in some websites I saw that as the density increases , the velocity of the sound decreases.If this statement is correct , how come the sound travels fastest through solids (since they have higher density)
From this it is clear that not only sound as compression wave But also in the form of Shear wave travels in Solids
This makes it easier for sound to travel with higher speed in solids
