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Table 1 shows the student's count-rate measurements for the sample.
Table 1
Time (minutes)
0
30
60
90
120
150
180
210
Count-rate (cps)
160
120
80
60
40
30
20
15
2.4
Use Table 1 to determine the half life of bismuth-212.

Two technicians are discussing a resistance measurement between the can-h and can-l wires. technician a says this measurement should be done with the ignition switch in the "run" position. technician b states that a measurement of 0 ohms indicates an open in the network. which technician is correct?

What is meant by the statement" the melting poin of glycerine is 13 degree celsius

Tall pacific coast redwood trees can reach heights of about 100 m. if air drag is negligibly small, how fast is a sequola cone moving when it reaches the ground f it dropped from the top of a 100 m tree?