The laws of physics demand that a neutron star has a maximum mass of ____ solar mass(es)

a. 1
b. 1.4
c. 3
d. 8
e. 20


c

Physics & Space Science

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A block of mass m sits at rest on a rough inclined ramp that makes an angle ? with the horizontal. What must be true about normal force F on the block due to the ramp?

A) F > mg B) F > mg cos ? C) F > mg sin ? D) F = mg cos ? E) F = mg sin ?

Physics & Space Science

Two objects, A and B, are placed on an inclined plane that can be rotated to different angles of elevation. A starts to slide at twice the angle of elevation that B starts sliding. The respective coefficients for static friction for A and B are ?A and ?B. Choose the last answer that is correct

a. ?B > ?A b. ?A > ?B c. ?B = 2 ?A d. ?A = 2 ?B

Physics & Space Science

Hydrocarbons containing only single bonds are

a. alkanes. b. alkenes. c. aromatics. d. alkynes. e. ketones.

Physics & Space Science

In beta-minus decay

A) a proton is emitted. B) a neutron is emitted. C) an electron is emitted. D) an electron decays into another particle. E) a proton is transformed into a neutron.

Physics & Space Science