Infrared radiations are produced when a changing electric field creates a

longitudinal wave parallel to it

longitudinal wave perpendicular to it

changing magnetic field parallel to it

changing magnetic field perpendicular to it

Which of the following is a metric conversion? A. 1 kilometer = 1000 meters B. 1 mile = 5280 feet C. 1 pound = 16 ounces D. 1 gallon = 4 quarts

The region around a magnet where the magnetic force is exerted is also known as a. Magnetic pole b. Lodestone c. Magnetic field d. Magnetic domain

1. The speaker uses needles from two trees native to Florida Georgia Alabama 2. How many measurements did the speaker make of each needle type? -) eight ten twelve 3. The speaker reduced human error by the measurements. repeating rounding

Why is the efficiency of a machine never 100%

What are similarities between the Rorschach inkblots and the TAT test?

A canoeist on a lake throws a 0.145 kg baseball at 20.0 m/s to a friend in a different canoe. Each canoe with its contents has a mass of 120 kg, and is at rest initially.

You short-circuit a 9 volt battery by connecting a short wire from one end of the battery to the other end. if the current in the short circuit is measured to be 18 amperes, what is the internal resistance of the battery?

A student is trying to calculate the density of a ball. She already knows the mass, but she needs to determine the volume as well. Which of the following formulas can be used to calculate the volume of the ball?

Is there such a thing as real time weather radar? why not?

Luke and Carrie are driving down a straight section of the interstate at 70 mph in Luke's new convertible. Carrie is drinking a soda in the passenger seat.