__________ in an x-ray spectrum of an atom occur because electrons in the atom make transitions to lower energy levels after being bombarded with high energy electrons
Fill in the blank(s) with correct word
Characteristic peaks
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A 5,000 kg satellite is orbiting the Earth in a circular path. The height of the satellite above the surface of the Earth is 800 km. The velocity of the satellite is
A. 7,460 m/s. B. 6,830 m/s. C. 6,430 m/s. D. 5,950 m/s. E. 5,350 m/s.
Two objects of different mass are released simultaneously from the top of a 20-m tower and fall to the ground. If air resistance is negligible, which statement best applies?
a. The greater mass hits the ground first. b. Both objects hit the ground together. c. The smaller mass hits the ground first. d. No conclusion can be made with the information given.
An object is placed 15 cm to the left of a double-convex lens of focal length 20 cm. Where is the image of this object located?
A) 60 cm to the right of the lens B) 60 cm to the left of the lens C) 8.6 cm to the right of the lens D) 8.6 cm to the left of the lens E) 30 cm to the left of the lens
Compare
(a) Compare the linear atom density of the [100] and [111] directions in the BCC metal iron, with a lattice parameter of 0.286 nm. (b) Which is the most closely packed direction in the BCC structure? (c) What is the radius of an iron atom if it is assumed that the atoms touch along the most closely packed direction?