2. Electrons are accelerated in the picture tube of a-television through a po- tential difference of 8.00 x 10^3 V. (Use the values q e=1.60 x 10^-19
kg and
m e = 9.109 x 10^-31 kg.)
a. What is the change in the potential energy of each electron traveling
in this tube?
b. What is the change in the kinetic energy of the electrons?
c. At what speed do the electrons hit the screen?
(Please help !!)

The climate regions of the central and south america can be divided into four distinct regions which are tropical, arid, dry and cold climatic zones.

Explanation:

The tropical climate zones of the region produce both rain forests and the tree-dotted grasslands known as savannas. Rain forests are abundant in Central America, the Caribbean, and South America. Savannas are found in South America. Central America has an overall humid, tropical climate with distinct dry and rainy seasons throughout the region.

However, the weather can vary from country to country, and some countries have multiple climate zones.  Central America is the isthmus that connects North America to South America. An isthmus is 'a narrow strip of land surrounded by sea which connects two larger landmasses'. South America can be divided into four major climatic regions—tropical, temperate, arid, and cold. Savanna grassy lands inn south america experiences high temperature but receives wet precipitation.

Explanation: