________ optics greatly reduces the effect of atmospheric turbulence by deforming the shape of the mirror by computer control
Fill in the blank(s) with correct word
Adaptive
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One terminal of a battery is connected to a closed circuit, while the other terminal is left unconnected. Which of the following statements is true?
A) No current flows through the battery, and the potential of any point in the circuit is the same. B) No current flows through the battery, and the potentials of different points in the circuit are different. C) Current flows through the battery, and the potential of any point in the circuit is unchanged. D) Current flows through the battery, and the potentials of different points in the circuit are different.
An empty spice bottle has an inner volume of 1.31 × 10^?4 m3 . It has a mass of 112 g when filled with air, and it displaces 1.63 × 10^?4 m3 of water when fully submerged. What fraction of the total volume of the bottle will be beneath the surface when it is placed in a tank of water?
a. 0.69 b. 0.81 c. 0.85 d. 1.00 e. 1.46
Ice or compacted snow sublimes to a saturated vapor in cold climates. Estimate the rate at which ice will sublime per unit area on an iceberg if the ice is -30ºC and the air is - 10ºC. Assume a convective heat transfer coefficient of 20 W/m^2?K.
What will be an ideal response?
When a ball thrown straight upwards reaches the very top of its path, its acceleration is
A) zero. B) 5 m/s2. C) 10 m/s2. D) none of the above