Sound waves with a frequency above 20,000 Hz are referred to as

infrasonic waves

ultrasonic waves

sonic booms

doppler waves

How many poles do you expect to see in your magnet? Look around your room. Make a list of 5 items that might be attracted to the magnet: Make a list of 5 items that you think will not interact with the magnet: Check your hypothesis in (1.2) and (1.

What is the major energy resource used to generate electricity around the globe and why?

What is the best way to determine if a chemical reaction occurred? A) a new substance is created with new properties B) it bubbles C) properties stay the same

if you put something like a piece of cardboard between a magnet and an iron nail the magnets to hold the nail in place even though the magnet is not touching the nail explain how that happens

A bird-watcher is hoping to add the white-throated sparrow to her "life list" of species. How far could she be from the bird described in example 14-8 and still be able to hear it? Assume no reflections or absorption of the sparrow's sound.

The friends now feel ready to try a problem. Suppose an Atwood machine has a mass of m1 = 2.5 kg and another mass of m2 = 8.5 kg hanging on opposite sides of the pulley. Assume the pulley is massless and frictionless, and the cord is ideal.

What are the 3 main branches of natural sciences

A girl is walking 2km north them east then south then west whar is her displacement

Find the y-component of this vector:73.3,12.0m. Remember, angles are measured from the + x axis.

A smaller unit of volume than a milliliter would be a microliter. A microliter is one-millionth of a liter. Select one: a. True b. False