The sharply defined boundary that separates the crust from the mantle is called the ______________
Fill in the blank(s) with correct word
Moho, or Mohorovicic discontinuity
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Polarization: A vertically polarized beam of light of intensity 100 W/m2 passes through two ideal polarizers. The transmission axis of the first polarizer makes an angle of 20.0° with the vertical, and the transmission axis of the second one makes an angle of 40.0° with the vertical. What is the intensity of the light after it has passes through both polarizers?
A. 22.2 W/m2 B. 44.4 W/m2 C. 66.6 W/m2 D. 78.0 W/m2 E. 11.7 W/m2
An airplane flies at 40 m/s at an altitude of 50 m. The pilot drops a heavy package that falls to the ground below. Neglecting air resistance, the package will land
A) beneath the plane. B) 400 m behind the plane. C) 500 m behind the plane. D) more than 500 m behind the plane. E) none of the above
The Doppler technique for planet detection has found Earth-like planets around nearby Sun-like stars
Indicate whether the statement is true or false
A 0.32-kg ball is moving horizontally at 30 m/s just before suddenly bouncing off a wall Just after the bounce, it is moving horizontally at 25 m/s but in the opposite direction
(a) What is the magnitude of the change in momentum of the ball during the bounce? (b) What percentage of the ball's original kinetic energy was lost in the collision?