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.

Physics & Space Science

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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

Physics & Space Science

The place where two streams join together is called

What will be an ideal response?

Physics & Space Science

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.

Physics & Space Science

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

Physics & Space Science