Find the minimum wavelength for x-ray with a) 35 kV and b) 45kV voltages.
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- Which of the following is scalar? O -51.2 m O 51.2 m [East] 51.2 m O 51.2 m/s [down]Projectile Mution a) calculate te ro range for V = 20 m/s 0 0 = 30°,0 = 45 b) Calculate R for V=20m/s 0 = 30° Ө Yo = 40m Hint: use R formula Yo quadratic 0 vå 8 -R R = X f R >1 I9. A hoat moves from a point A(4i+5j) to another point across the river. The new position of the boat is given by B (-71-91). The displacement vector is given by b 11i-14
- Q16) Let A = 2i + 3j + k and B = i-3j – 2k. What is A x B ? A) - 3i + 3j – 6k B) - 3і + 5j — 9k C) - 4i +3j – k ma D) - 9i – 3j – 3k21- Which are incorrect for the K, L and M vectors given in the figure? A) Only I B) Only II C) Only III D) I and III E) II and IIIHalf Time At 3:00 the hour hand and the minute hand of a clock point in directions that are 90.0 ∘ apart. What is the first time after 3:00 that the angle between the two hands has decreased by half to 45.0 ∘ ? t = ? min