The half-life of iodine-131 is 8 days. chan hee examines two samples of iodine-131. sample 1: 10 g sample 2: 20 g what can chan hee expect to observe about the samples after 16 days? a. the mass of iodine-131 in sample 1 will be 7.5 g and in sample 2 will be 16 g. b. three-fourths of each sample will have undergone radioactive decay. c. ten grams of each sample will have undergone radioactive decay. d. one-half of each sample will still be iodine-131.
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Physics, 22.06.2019 18:30, okitsfrizz6366
Ahot-air balloon is 11.0 m above the ground and rising at a speed of 7.00 m/s. a ball is thrown horizontally from the balloon basket at a speed of 9.00 m/s. ignore friction and air resistance and find the speed of the ball when it strikes the ground.
Answers: 1
Physics, 22.06.2019 20:10, haza1873
Consider two less-than-desirable options. in the first you are driving 30 mph and crash head-on into an identical car also going 30 mph. in the second option you are driving 30 mph and crash head-on into a stationary brick wall. in neither case does your car bounce off the thing it hits, and the collision time is the same in both cases. which of these two situations would result in the greatest impact force?
Answers: 1
The half-life of iodine-131 is 8 days. chan hee examines two samples of iodine-131. sample 1: 10 g...
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