A sample contains The half-life of years. What is the activity of the sample?

A. 3300 Bq
B. 1250 Bq
C. 382.0 Bq
D. 265.0 Bq
E. 3.000 Bq


D. 265.0 Bq

Physics & Space Science

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Find the orbital speed of an ice cube in the rings of Saturn

The mass of Saturn is 5.68 × 1026 kg and the rings have an average radius of 100,000 km. (G = 6.67 × 10-11 N ? m2/kg2) A) 27.5 km/s B) 13.8 km/s C) 1.95 km/s D) 19.5 km/s

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Where does nuclear fusion occur in the Sun?

A) on the surface B) anywhere below the surface C) in its core D) just above the visible surface E) all of the above

Physics & Space Science

When a boxer is moving away from a punch, the force experienced is reduced because

A) momentum transfer is reduced. B) the time of contact is increased. C) the force is less effective. D) all of the above

Physics & Space Science

The units T•m2/s are equivalent to:

a. V. c. W. b. N/m. d. webers.

Physics & Space Science