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

Choose the correct answer:

Interference

Refraction

Polarization

Diffraction

The force exerted by gravity, electricity, and magnetism act at a distance with no physical connection. for this reason, they are called___forces

A spring with spring constant 18.8 N/m hangs from the ceiling. A ball is suspended from the spring and allowed to come to rest. It is then pulled down 5.00 cm and released. The ball makes 36.0 oscillations in 22.0 seconds.

Which of the following items involve a wedge? Check all that apply. A. A chisel B. An axe C. A knife. D. A hairbrush

A 100.0 resistor, a 50.0 resistor, and a 40.0 resistor are connected in parallel and placed across a 12.0 V battery. ( a. What is the equivalent resistance of the parallel circuit? Incorrect: Your answer is incorrect. ( b.

What is the tangent function used to find and what are its units

What type of energy comes from the food that we eat?

Which of the following are vector quantities? check all that apply. a. time b. displacement c. force d. mass

Imagine you are on a bus with a helium balloon tied on a string tied to the seat in front of you. the bus stops short to avoid running over a rabbit and you are thrown forward. what happens to the balloon in relation to the bus? 1. the balloon pops.

Give one reason why the density of iron is higher than the density of oxygen

In which region of the periodic table do the elements NOT normally react chemically with other elements? A. metals B. metalloids C. nonmetals D. noble gases