Current is the amount of charged passed divided by elapsed time.
I = Q/Δt
I = current, Q = charge, Δt = elapsed time
We also know an electron has a charge of 1.6×10⁻¹⁹C, so let us find the total charge by multiplying this unit of charge by the total number of electrons:
Q = 1.6×10⁻¹⁹(3×10²⁰) = 48C
We also have Δt = 6s, so let's plug these values in to solve for I:
I = 48/6
I = 8A
Explanation:
K.E. of marble 1 = (1/2) × 0.2 × (22/0.8) ^2
= 0.1 × 756.25
= 75.625
K.E. of marble 2 = (1/2) × 1.2 × (26/0.8)^2
= 0.6 × 1056.25
= 633.75
Answer:
DL = 0.0105 [m] = 10.57 [mm]
Explanation:
To solve this problem, we use the following equation that involves length changes depending on temperature changes.
where:
DL = length change
α = thermal expansion coefficient = 11 * 10^(-6) [1/°C]
DT = temperature change = (37-6) = 31 [°C]
L = nominal or initial length = 31 [m]
DL = 11 * 10^(-6) * 31 * 31
DL = 0.0105 [m] = 10.57 [mm]
Energy at top = m*g*height at top from release point
=0.16*9.81*11.6
=18.21J
At release kinetic energy= Gravtiational energy at top
1/2*0.16*v^2=18.21J
v^2=227.625
v=15.10m/s
Reactions between atoms occur whenan atom seeks to fill its outer shell of electrons