The type of radiation that fogged Becquerel’s photographic plates was probably
A. Alpha radiation.
B. Beta radiation.
C. Gamma radiation.
D. Either alpha or beta radiation.
E. Either beta or gamma radiation.
B. Beta radiation.
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A wheel rotating about a fixed axis has a constant angular acceleration of 4.0 rad/s2. In a 4.0-s interval the wheel turns through an angle of 80 radians. Assuming the wheel started from rest, how long had it been in motion at the start of the 4.0-s interval?
A. 2.5 s B. 4.0 s C. 3.5 s D. 3.0 s E. 4.5 s
The place where two streams join together is called
What will be an ideal response?
The least massive stars, including our sun, eventually end their lives as
A) neutron stars. B) red giants. C) black holes. D) white dwarfs. E) quasars.
The mass of an atom of carbon-12 (Z = 6) is less than the mass of 6 protons and 6 neutrons because of __________
Fill in the blank(s) with correct word