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?
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.
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