Projectile Motion: A celebrating student throws a water balloon horizontally from a dormitory window that is 50 m above the ground. It hits the ground at a point 60 m from the building without appreciable air resistance.(a) What will be the horizontal component of the velocity of the balloon just before it hits the ground?(b) What will be the magnitude of the vertical velocity of the balloon just before it hits the ground?
What will be an ideal response?
(a) 19 m/s (b) 31 m/s
Physics & Space Science
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The third step in the precipitation-hardening process is to _________ the alloy to form the precipitate.
Fill in the blank(s) with the appropriate word(s).
Physics & Space Science
The current in an electron beam in a cathode-ray tube is measured to be 280 µA. How many electrons hit the screen in 50 s? (e = 1.6 × 10^-19 C)
a. 2.2 × 10^11 electrons c. 8.8 × 10^15 electrons b. 8.8 × 10^16 electrons d. 2.2 × 10^15 electrons
Physics & Space Science
The lunar _______________ are saturated with craters
Fill in the blank(s) with correct word
Physics & Space Science
What actually "controls" Saturn's rings?
a. Saturn's magnetic field b. Saturn's tidal heating c. Saturn's moons d. Saturn's rapid rotation e. Saturn's metallic core
Physics & Space Science