Which of the following is classified as "ionizing radiation"?
A) gamma rays
B) alpha and beta radiation
C) Both of the above.
D) X-rays
E) All of the above.
E
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How many atoms are there in a face centered cubic unit cell that has an atom at 0, 0, 0?
What will be an ideal response?
An airplane with an airspeed of 120. km/h is headed 30.0° East of North in a wind blowing due West at 30. km/h. What is the groundspeed of the plane?
What will be an ideal response?
A car's initial velocity is 50.0 km/h in the direction 60.0° north of east, and its final velocity is 70.0 km/h in the direction 40.0° south of east. If the time period for this journey is 30.0 minutes, what is the magnitude of the car's average acceleration?
a. 186 km/h/h b. 240 km/h/h c. 92.8 km/h/h d. 3.94 km/h/h
In our Solar System, an object is called a planet if
A. it has cleared its neighborhood. B. it is spherical. C. it orbits the Sun. D. All of these choices are correct.