Answer:
The wave speed in SI units, is closest to - 2.7 m/s
Explanation:
given information:
y = 0.005 cos [π(38t - 14x)]
we know that the wave function is
y = A cos (kx ± ωt)
where
A = amplitude
w = angular velocity
k = wave number
thus,
y = 0.005 cos [(14πx - 38πt)]
ω = - 38π
k = 14π
to find the speed v, we use the equation below
v = ω/k
so,
v = - 38π/14π
= - 2.7 m/s
Explanation:
The maximum height of an object, given the initial launch angle and initial velocity is found with:h=v2isin2θi2g h = v i 2 sin 2 θ i 2 g .
Given :
We, have to find frequency :
Hope Helps!
False
Voltage in an electrochemical cell is in indication of equilibrium, higher will be the non-equilibrium, higher will be the voltage, or we can say at equilibrium voltage tends to 0.
Voltage in an electrical cell is the result of flow of electron, which flow due to difference in charge of the cells, higher the charge difference higher will be the voltage, as the equilibrium between the chemical cells established the flow of electron will stop, and the voltage of the cell tend to 0.
2) they add the insulation to better the durability or the earbuds
