Ball rolls 6cm in one second. 6cm x 40 sec = 240cm
It has the highest birthrate and will triple its population by 2050. "There is a lack of appropriate infrastructure, health care, access to hospitals, education and jobs for these people," Kaps said, outlining the dilemma many African countries will face in the future. Despite waning infant mortality, the average birthrate of 4.7 children per woman remains high when compared with the rest of the world.
I could tell you the energy if you can tell me the acceleration and height above earth's surface.
Well the shown circuit is definitely open because the lines are not connected. And it is not a parallel circuit because there would be more lines. Like a string of Christmas lights. So it must be an "open series circuit".
Answer:
1) The balloon will shrink
2) The balloon will grow bigger and regain its shape
Explanation:
By the kinetic theory of gases, we have;


Where;
= RMS Speed
R = The universal gas constant
T = The temperature
MW = The Molecular weight
n = The number of moles
V = The volume
P = The pressure
1) When the balloon is placed in the refrigerator for minutes, the temperature inside the balloon will drop and RMS speed will reduce, however due to the elastic wall of the balloon, the pressure will remain the same therefore the volume will reduce and the balloon will shrink
2) When the balloon is placed on the kitchen counter, the temperature inside the balloon will rise leading to the increase in the RMS speed which will raise the pressure effect on the wall of the balloon as the balloon is made of elastic material, as the pressure rises, the wall expands to keep the pressure constant and the volume occupied by the air particles will increase, the balloon will grow bigger and regain its shape.