Tests on human subjects in Boston in 1965 and 1966, following the era of atomic bomb testing, revealed average quantities of about 2 pCi (7×10−2 dis/s) of plutonium radioactivity in the average person. Suppose each disintegration produces one alpha particle. If each alpha particle deposits 8×10−13J of energy and if the average person weighs 78 kg, calculate the number of rads of radiation in 5 yr from such a level of plutonium. 1 Bq=1 disintegration/s (dps) 1 Ci=3.7×1010 Bq 1 rad=0.01 Gy, 1 Gy=1 J/(kg tissue) 1 rem=0.01 Sv, 1 Sv=1 J/kg

Explanation:

1. Number of seconds in 5 yr

2. Energy absorbed

3. Total radiation received

heat or electricity in the atmosphere- c.

answer: e.   sour taste

explanation: acids are those substances which dissociates in water to give ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. acids are sour in taste. example: hcl

bases are those substances which dissociates in water to give ions or accepts ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. bases are bitter in taste. bases are slippery in nature.