If the spectrum of star jessica peaks at optical wavelengths, and star Jacob's surface is twice as hot as jessica's surface, then jacob's spectrum peaks in the infrared.
Indicate whether the statement is true or false.
Answer: False.
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When two bodies of different masses collide, the impulses they exert on each other are
a. equal for all collisions. b. equal but opposite for all collisions. c. equal but opposite only for elastic collisions. d. equal but opposite only for inelastic collisions. e. equal but opposite only when the bodies have equal but opposite accelerations.
Why aren't optical or radio telescopes used in particle astronomy, which studies cosmic waves and gravity waves? a. Cosmic and gravity waves are too dangerous to detect
b. Particle astronomy can only be studied in deep space. c. Cosmic and gravity waves are too large of particles for ground-based telescopes. d. Optical and radio telescopes can only detect electromagnetic radiation. e. Optical and radio telescopes are not technologically advanced enough to capture these particles.
Muscular strength has to do with __________
Fill in the blank(s) with the appropriate word.
A car originally traveling at 30 m/s manages to brake for 5.0 seconds while traveling 125 m downhill. At that point the brakes fail. After an additional 5.0 seconds it travels an additional 150 m down the hill. What was the acceleration of the car after the brakes failed?