Answer:
the wave length becomes doubled or becomes two times the initial wavelength = 240 cm
Explanation:
From wave,
v = λf................ Equation 1
Where v = velocity of the wave, λ = wavelength of the wave, f = frequency of the wave.
Given: f = 1200 Hz, λ = 120 cm = 1.2 m
Substitute into equation 1
v = 1200(1.2)
v = 1440 m/s.
When the ship sent out a 600 Hz sound wave,
make λ the subject of formula in equation 1
λ = v/f............. Equation 2
Given: f = 600 Hz, v = 1440 m/s
Substitute into equation 2
λ = 1440/600
λ = 2.4 m or 240 cm.
When the ship sent out a 600 Hz sound wave instead, the wave length becomes doubled or becomes two times the initial wavelength = 240 cm
Answer: 981 Pa
Explanation:
1) Data:
m = 60 kg
S = 6000 cm²
P = ?
2) Formulas
i) F = peso = mg
ii) P = F / S
3) Solution
i) F = 60kg × 9.81 m/s² = 588.6 N
ii) P = F / S
First, convert 6000 cm² to m²: 6000 cm² × 1m² / (100cm)² = 0.6 m²
Now, plug in the values and do the operations: P = 588.6N / 0.6m² = 981 Pa
clay or shale not able to be moved through
Given Information:
Charge = q = 7.0x10⁻⁶ C
Required Information:
Number of electrons = n = ?
Answer:
Number of electrons = 4.375x10¹³
Explanation:
We know that charge is given by
q = n*e
Where n is the number of electrons and e is the electronic charge that is 1.60x10⁻¹⁹ C
n = q/e
n = 7.0x10⁻⁶/1.60x10⁻¹⁹
n = 4.375x10¹³ electrons
Therefore, 4.375x10¹³ electrons were transferred.
It's the gravitational force that the ball exerts on the Earth. The two forces are equal and opposite.