Multiple choice.
a.
a piezometer is used to measure the:
select one:
1. gauge pressure in a static mass of liquid
2. pressure difference between two liquids
3. pressure if the flowing fluid is a gas
b. mark the correct statement:
select one:
1. local atmospheric pressure depends only upon the height of locality above mean sea level
2. a barometer reads the difference between local and standard atmospheric pressure

What causes the development of most clouds and precipitation in the atmosphere?

In an old-fashioned amusement park ride, passengers stand inside a 3.0-m-tall, 5.0-m-diameter hollow steel cylinder with their backs against the wall. the cylinder begins to rotate about a vertical axis. then the floor on which the passengers are standing suddenly drops away! if all goes well, the passengers will “stick” to the wall and not slide. clothing has a static coefficient of friction against steel in the range 0.60 to 1.0 and a kinetic coefficient in the range 0.40 to 0.70. part a what is the minimum rotational frequency, in rpm, for which the ride is safe? express your answer using two significant figures. f f = rpm

Select the best definition for wavelength. the height of an oscillating electromagnetic wave the rate at which electromagnetic waves oscillate. the distance between two crests of an electromagnetic wave. the oscillations of electric and magnetic fields select the best definition for frequency. the oscillations of electric and magnetic fields. the height of an oscillating electromagnetic wave. the distance between two crests of an electromagnetic wave. the rate at which electromagnetic waves oscillate