Which constellation lies in the direction toward the galactic center?
A) Orion
B) the Big Dipper
C) Leo
D) Sagittarius
E) Taurus
D
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Vector 1 is 7 units long and is at 70°. Vector 2 is 5 units long and is at 155°. Vector 3 is 3 units long and is at 225°. Which vector has equal magnitude components?
a. Vector 1 b. Vector 2 c. Vector 3 d. None of the vectors has equal magnitude components.
Why is infrared much better than visible light in studying star formation?
What will be an ideal response?
Two satellites with equal rest masses of 100 kg are traveling toward each other in deep space. One is traveling at 0.650c and the other at 0.850c. The satellites collide and somehow manage to stick together
What is the rest mass of the combined object after the collision? A) 378 kg B) 277 kg C) 200 kg D) 312 kg E) 100 kg
In electron diffraction, an electron moving at speed v << c acts like
a. a particle with momentum mv. b. a particle with position coordinate v/t. c. a wave with wavelength v/t. d. a wave with wavelength h/mv. e. both a particle with position coordinate v/t and a wave with wavelength v/t.