Generally, the densest parts of the interstellar medium are the ________
Fill in the blank(s) with correct word
dark dust clouds.
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As shown in the video, Earth has two tidal bulges at all times. Approximately where are these bulges located?
Spherical Mirrors: An object is 10 cm in front of a concave spherical mirror with a focal length of magnitude 3.0 cm. Where is the image?
A. 13 cm from the mirror B. 7.0 cm from the mirror C. 4.3 cm from the mirror D. 3.3 cm from the mirror
Video 1 (Chapter 19): If the lens of the eye cannot adjust enough to focus on a distant object, what kind of lens should be added to the optical system?
A. Converging lens B. Diverging lens C. A combination of a converging and a diverging lens. D. No lens can fix this.
An unfueled 1000-kg experimental rocket sled on level frictionless rails is loaded with 50 kg of propellant. It exhausts the propellant in a 20 s "burn.". If the rocket, initially at rest, moves at 160 m/s after the burn, what impulse is experienced by the rocket sled?
a. 1.1 × 10^5 kg•m/s c. 1.5 × 10^5 kg•m/s b. 1.6 × 10^5 kg•m/s d. 1.9 × 10^5 kg•m/s