Questions by Ctc Chen

Questions by Ctc Chen

If the point P(-3/5,y)lies on the unit circle and P is in the second quadrant, what does y equal

asked Jan 9, 2018

2 answers

4 votes

138k views

what type of radiation is emitted when polonium-212 forms lead-208?. A.Alpha particle. B.beta particle. C.gamma radiation. D.none of the above

asked Jul 8, 2017

2 answers

4 votes

55.9k views

Why did prehistoric people need to move from place to place? a. to obtain food b. to tend flocks c. to build villages

asked Jun 24, 2017

1 answer

4 votes

1.6k views

Which property of gases is explained by the process of diffusion?

asked May 3, 2017

2 answers

3 votes

232k views

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