A class took a field trip to a music studio. The students watched through thick glass as the musicians played music inside the studio. The students could only hear the music when the studio door was open.
The glass separating the musicians from the students is made with two layers of thick glass. The space between the glass
layers has had all the air removed, creating a vacuum.
Which statement best explains why the students were able to see the musicians even while they were unable to hear
them?
The frequency of light is much greater than the frequency of sound.
The speed of light is much greater than the speed of sound.
Light travels through glass while sound does not
o
Sound requires
medium while light does not
Previous

Answer: a charge of -1.0  × 10⁻⁴ c must be placed  at x = 26 m.the sign of the charge will be the same sign as the  -4.0  µc charge.======electricstatic force between two point charges  is given by    where k is coulomb's constant,  8.99×10⁹  n·m²/c², q₁ and q₂ are the point charges, and r is the distance between the two point charges.assign positive to q₁let q₁ =  6.0 µc, q₂ = -4.0  µc, q₀ represent the charge at the origin, and q₃ represent this new charge to place.the charge at the origin q₀ would experience the following force f₀₁ from q₁, with r = 6.0 m (note that 1  µc = 10⁻⁶ c)    the force from q₂    the force from q₃    the net force on the origin charge, q₀, has to be zero for no electrostatic forcehaving an equation where k and q₀ can be divided out of the equation will allow us to solve for q₃    isolating:     a charge of -1.0  × 10⁻⁴ c must be placed  at x = 26 m.the sign of the charge will be the same as the  -4.0  µc charge