Answer:
Explanation:
Given
speed of Electron
final speed of Electron
distance traveled
using equation of motion
where v=Final velocity
u=initial velocity
a=acceleration
s=displacement
acceleration is given by
where q=charge of electron
m=mass of electron
E=electric Field strength
Answer:
i₃ > i₁ > i₂
Explanation:
For this exercise we use the resistance ratio
R = ρ
where ρ is the resistivity of the wire, in this case it is the same for all three cases, l the length and A the area of the wire.
We have three cases
a) length l = L
area A = A
b) length l = 2L
area A = A
c) length l = L
area A = 2A
we calculate the resistance for each case
a) R₁ = ρ L / A
b) R₂ = ρ 2L / A
R₂ = 2 ρ L / A
R₂ = 2 R₁
c) R₃ = ρ L / 2A
R₃ = ½ ρ L / A
R₃ = 0.5 R₁
therefore when the connect of the circuit is carried out we can use ohm's law
V = i R
i = V / R
whereby
a) i₁ = V / R₁
b) i₂ = V / 2R₁
i₂ = ½ i₁
i₂ = 0.5 i₁
c) i₃ = V / 0.5 R₁
i₃ = 2 I₁
the order from highest to lowest in the current is
i₃ > i₁ > i₂
For a box with a total surface area of 1.2 m2, the thermal conductivity of the insulating material is mathematically given as
k=5.29*19^{-6} kcal/(s oC m)
<h3>What is the thermal conductivity of the insulating material?</h3>
Generally, the equation for the is mathematically given as
P=Ka dT/L
Therefore
k=10*4*10^{-2}/1.2*1.5
k=5.29*19^{-6} kcal/(s oC m)
In conclusion, the thermal conductivity
k=5.29*19^{-6} kcal/(s oC m)
Read more about Energy
brainly.com/question/13439286
Answer:
Ball 1 has a mass of 0.5 kilogram and an initial velocity of 1.00 meter/second. Ball 2 has a mass of 1.5 kg and an initial velocity of 0.00 meters/second.
Explanation:
The radiation emission is closely connected with their visible color. In ascending order, the hottest are blue, yellow and red planets. The Stefan-Boltzmann's Law says that the radiation emitted by a hot body is given by:
Where "A" is the area. Considering the planet as a sphere, we have to its area is givin by:
So we have that radiation is proportional to the radius of the planet. If the radius increases, the volume will increase. If a planet is larger, we can deduce that it has more mass.
Therefore, the more radiation the planet emit, it will be hotter, soon have more mass.
If you notice any mistake in my english, please let me know, because i am not native.