In alpha decay,

A) a proton turns into a neutron
B) a neutron turns into a proton
C) a proton turns into an electron
D) a helium nucleus is ejected


D

Physics & Space Science

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The electric field between two charged conducting plates is

A. Zero B. Strongest near the negative plate C. Strongest near the positive plate D. Uniform

Physics & Space Science

Approximately, what basic composition are all stars born with?

A) half hydrogen, half helium, no more than 2 percent heavier elements B) three-quarters hydrogen, one-quarter helium, no more than 2 percent heavier elements C) 90 percent hydrogen, 10 percent helium, no more than 1 percent heavier elements D) one-quarter hydrogen, three-quarters helium, no more than 2 percent heavier elements E) 98 percent hydrogen, 2 percent helium

Physics & Space Science

An object moving at a constant speed requires 6.0 s to go once around a circle with a diameter of 4.0 m. What is the magnitude of the instantaneous acceleration of the particle during this time?

a. 2.2 m/s2 b. 2.7 m/s2 c. 3.3 m/s2 d. 3.8 m/s2 e. 4.4 m/s2

Physics & Space Science

Georges-Louis de Buffon was the first to propose that the Sun and planets formed when a large vortex contracted and condensed

a. True b. False Indicate whether the statement is true or false

Physics & Space Science