If the tension in a rope is increased, what will happen to the speed of a wave traveling through the rope?
2 answers:
Answer:
The speed will increase.
Explanation:
Wave velocity in a rope can be discribed as :
,
where is the velocity,
is the tension and,
is the linear density of mass (this is mass over rope length).
As it can be seen from the formula, velocity is directly proportional to the tension, this means that if tension increase so it will the velocity.
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Answer:
W = 2.3 10²
Explanation:
The force of the weight is
W = m g
let's use the concept of density
ρ= m / v
the volume of a sphere is
V = π r³
V = π (1.0 10⁻³)³
V = 4.1887 10⁻⁹ m³
the density of water ρ = 1000 kg / m³
m = ρ V
m = 1000 4.1887 10⁻⁹
m = 4.1887 10⁻⁶ kg
therefore the out of gravity is
W = 4.1887 10⁻⁶ 9.8
W = 41.05 10⁻⁶ N
now let's look for the electric force
F_e = q E
F_e = 12 10⁻¹² 15000
F_e = 1.8 10⁻⁷ N
the relationship between these two quantities is
= 41.05 10⁻⁶ / 1.8 10⁻⁷
\frac{W}{F_e} = 2,281 10²
W = 2.3 10²
therefore the weight of the drop is much greater than the electric force