as the amount of radiation received is proportional to 1/d^2
2m from source
for 1m readings are 50 count per minute
for 2m = 50 / (2)^2
50 / 4 = 12.5 count per minute
I believe your answers are B, tastes bitter, and D, slippery feel. An example would be a bar of soap.
A semiconductor conducts electricity at high temperatures, but not at low temperatures. At high temperatures, metalloids act like metals and conduct electricity.
Explanation:
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Answer: A the kinetic energy is transformed into heat
Explanation:
Answer:
D. He showed that most of an atom's mass was located in the atom's
nucleus.
Explanation:
Ernest Rutherford changed the atomic model because of his experiment which was the gold foil experiment. A beam of alpha particles was aimed at a piece of gold foil, most particles passed through but some were scattered backward which showed that the middle of an atom (nucleus) is the where most of the mass is located.
