When a steadily flowing gas flows from a larger-diameter pipe to a smaller-diameter pipe, what happens to (a) its speed, (b) its pressure, and (c) the spacing between its streamlines?

Given right triangle ABC with altitude BD drawn to hypotenuse AC. If AC = 8 and BC = 4, what is the length of DC? (Note: the figure is not drawn to scale.) A D X

Which of the following best describes how wireless telephones are able to receive and produce sound from one person to another? A. Electromagnetic waves are received and then vibrate a speaker which produces additional electromagnetic waves. B.

How many moles of carbon are in the sample? 0.500 1.00 6.00 12.0

Wrapping a hot dish of food in shiny aluminium foil seems to keep the dish warm longer than wrapping it in clear plastic film. aluminium is much better conductor of heat than plastics, so why does it impede the flow of heat so well?

What is the correct name for the compound nh4clo4?

A sample of pure copper has a mass of 5 grams calculate its volume

Which statement best explains why carbon is present in so many kinds of molecules? Question 1 options: It is abundant on earth, so it is readily available to bond with other elements. It does not form strong bonds, so it breaks apart.

How long does it tae for bleach to evaprate?

What product (s) forms at the cathode in the electrolysis of an aqueous solution of k2so4?

What element is used as a shield to protect people from radioactive substances?