You will need: a half dollar, a handkerchief, a match or lighter, and adult supervision. Wrap the coin in a single thickness of the cloth, and wrap the cloth tightly around the coin. Hold the match or the cigarette lighter flame to the tight part of the cloth for a short time. Using the Text Editor, answer the following questions:What are your observations while doing this experiment?Why do you think the handkerchief does not get burned?

Which type of electromagnetic waves are dangerous enough to be used to kill cancerous cells? (a)gamma rays (b)visible light (c)infrared light (d)microwaves

This is important 1. what happens to the speed of molecules in water vapor when it condenses to form a liquid? (2 points) the molecules slow down. the molecules speed up. the molecules slow down and then speed up. the molecules speed up and then slow down. 2. how might human activities change to compensate for a decrease in water supplies? (2 points) humans might build a factory. humans might build drainage systems. humans might extract more water from the ground. human behavior does not change because of the water cycle. i'll be grateful if anyone can answer these 2 questions !

The charge on an electron is 1.60218 × 10−19 c and its mass is 9.10939 × 10−31 kg. how strong a magnetic field must be experienced by the electron if its path is a circle of radius 5.5 cm? answer in units of t.