Which of the following effects could not be observed for sound waves in air?

Choose the correct answer:

Interference

Refraction

Polarization

Diffraction

The difference in emf between the primary coil of a transformer and the secondary coil is directly related to the relative number of turns in the coils. True or False?

What is a resistance training method that involves performing a set with light load followed by increasing the load and decreasing the repetitions with each continuing set?

17. 1 micrometer (1 µm) equals: A. 10-^3 m B. 10-^6 m C. 10^3 m D. 10^6 m

A car applies a force of 20,000 N downward towards the street. How much force does the street apply on the car?

What is the shear modulus of liquid

Suppose s (t) is the position of an object moving along a line at time t is greater than or equal to 0. What is the average velocity between the times t=a and t=b? What is the instantaneous velocity at t=a?

Estimate how long it would take one person to mow a football field using an ordinary home lawn mower. suppose that the mower moves with a 1-km/h speed, has a 0.5-m width, and a field is 360 ft long and 160 ft wide. 1 m = 3.281 ft.

Badri makes the table below to review the factors that affect the electric force between objects. Which change will correct the error in Badri's table?

A star with the same mass of the sun has a newly discovered planet whose semi-major axis of 2.48 au and an eccentricity of 0.08. what is the aphelion distance of the new planet

A weather balloon is inflated to a volume of 2.2 x 10^3 L with 374 g of helium. What is the density of helium in grams per liter?