Consider a cumulus cloud to be a cylindrical in shape with a cross-sectional area of 10 km2 and a height of 3 km. all of the cloud is initially supercooled with a liquid water content of 2 g/m3 . suddenly a uniform concentration of ice nuclei (in) of 1 per liter (103 l = 1 m3 ) is introduced into the cloud.

calculate the temperature change (delta t) of the cloudy air assuming that is lies between 850-550 hpa isobaric surfaces, and that its specific heat capacity is not influenced by the water (vapor, droplet, or snowflake) in the cloud. [ hint: use cp=1004 j/k kg ; lf = 3.34 * 105 j/kg ; delta hf = mair*cp*delta t = mwater*lf ]

if all the ice nuclei precipitate and melt before they reach the ground, how much rainfall is produced?

The us government wants to allocate billions of dollars in the next 10 years to assure our future energy security. the funds will be spread among a variety of possible energy resources. where do you think the government should put the greatest support: solar energy, wind energy, clean coal, oil exploration, gas exploration, or a combination of sources? are there other efforts that should be explored? support your position with cited information for both questions.

First, launch the video below. you will be asked to use your knowledge of physics to predict the outcome of an experiment. then, close the video window and answer the question at right. you can watch the video again at any point. part a as in the video, we apply a charge +q to the half-shell that carries the electroscope. this time, we also apply a charge –q to the other half-shell. when we bring the two halves together, we observe that the electroscope discharges, just as in the video. what does the electroscope needle do when you separate the two half-shells again? view available hint(s) as in the video, we apply a charge + to the half-shell that carries the electroscope. this time, we also apply a charge – to the other half-shell. when we bring the two halves together, we observe that the electroscope discharges, just as in the video. what does the electroscope needle do when you separate the two half-shells again? it deflects more than it did at the end of the video. it deflects the same amount as at end of the video. it does not deflect at all. it deflects less than it did at the end of the video. submit

Which terms describe the purpose of antennas on devices that use radio waves? transmit and receivemodify and amplifyamplify and receivemodify and transmit