Why are alpha particles so easily stopped by even very thin sheets of insulation material?


Alpha particles are easily stopped because of their large size and because they carry a
+2 positive charge.

Physics & Space Science

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Estimate the temperature distribution through a bare 16 gauge copper wire conducting 1.5 amperes of electric current if the surrounding air is at 10ºC and the convective heat transfer coefficient is 65 W/m^2?K.

What will be an ideal response?

Physics & Space Science

Velocity: The position x(t) of a particle as a function of time t is given by the equation x(t) = (3.5 m/s)t - (5.0 m/s2)t2. What is the average velocity of the particle between t = 0.30 s and t = 0.40 s?

Fill in the blank(s) with the appropriate word(s).

Physics & Space Science

The Collision Hypothesis and Evolutionary Theories are considered to be equally plausible explanations of how planetary systems form

Indicate whether the statement is true or false

Physics & Space Science

Ptolemy's model of the universe

a. was heliocentric. b. included elliptical orbits. c. contained epicycles. d. all of the above e. none of the above

Physics & Space Science