How are electromagnetic waves different from sound waves?

If the slight resistance you feel from a light switch (when you flick it) is the reaction force, what is the action force? A. flicking the switch B. the light turning on C. friction between your finger and the switch D.

The message refers to which of the following? A. The medium that carries the information B. The context of the communication C. Ideas, thoughts, and feelings being communicated. D. The receiver s response to the sender

A planet's density can be measured by combining a. Doppler and transit observations. b. direct imaging from the new generation of space telescopes. c. spectral observations of the planet's atmosphere. d.

Physical properties are Question 2 options: A. those properties which include combustibility, flammability, and reactivity B. those properties which require a chemical reaction to be observed C. those properties that cannot be changed D.

If a ping pong ball and a golf ball are both moving in the same direction with the same amount of kinetic energy, the speed of the ping pong ball must be A. less than golf ball B. same as golf ball C. more than golf ball D. impossible to know

Carbon and oxygen, both nonmetals, bond to form a compound. What is the name of the carbon compound with one carbon and two oxygens? A) carbon oxide B) carbon dioxide C) carbon dioxygen D) monocarbon dioxide

Salt water has greater density than fresh water. A boat floats in both fresh water and in salt 12) water. Where is the buoyant force greater on the boat?

A 1000-kg space probe is motionless in space. to start moving, its main engine is fired for 5 s during which time it ejects exhaust gases at 5000 m/s. at the end of this process it is moving at 20 m/s. the approximate mass of the ejected gas is:

In the fishbowl, the glass, water, rocks, and plastic plants are in thermal equilibrium. This situation means the temperature of the rocks is? F. If the water is 75 degrees

An archer shoots an arrow at a 75.0 m distant target; the bullâs-eye of the target is at same height as the release height of the arrow. (a) at what angle must the arrow be released to hit the bullâs-eye if its initial speed is 35.