Answer:
The frequency of the sound wave is 800Hz
The speed of sound in a is about 340m/s.
Velocity = frequency x wavelength
making wavelength the subject formula
wavelength = Velocity/frequency.
wavelength = 340/800
wavelength = 0.425m.
Answer:
0.53 N, 25.6°
Explanation:
side of triangle, a = 1.2 m
q = 7 μC
q1 = - 8 μC
q2 = - 6 μC
Let F1 be the force between q and q1
By using the coulomb's law


F1 = 0.35 N
Let F2 be the force between q and q2
By using the coulomb's law


F2 = 0.26 N
Write the forces in the vector form



Net force


Magnitude of the force

F = 0.53 N
Direction of force with x axis

θ = 25.6°
Katlyn pours hot water into the flavored gelatin powder and stirs.
Gelatin powder is the solute. Water is the solvent. <em>(D)</em>