Eros is the only asteroid upon which a spacecraft has landed
Indicate whether the statement is true or false
TRUE
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While Ganymede and Callisto are about the same size, the surface of Callisto is much younger, with considerable tectonic reformation
Indicate whether the statement is true or false
Beings on spherical asteroid ? have observed that a large rock is approaching their asteroid in a collision course. At 7514 km from the center of the asteroid, the rock has a speed of 136.0 m/s and later at 2823 km it has a speed of 392.0 m/s
Use energy conservation to find the mass of asteroid ?. You can neglect any effects due to the parent star of the asteroid. (G = 6.67 × 10-11 N ? m2/kg2) A) 4.582 × 1021 kg B) 9.164 × 1027 kg C) 6.112 × 1028 kg D) 4.582 × 1020 kg
If the resistance in a constant voltage circuit is doubled, the power dissipated by that circuit will
A) increase by a factor of two. B) increase by a factor of four. C) decrease to one-half its original value. D) decrease to one-fourth its original value.
A crystal diffracts a beam of electrons, like a diffraction grating, as they hit it perpendicular to its surface
The crystal spacing is 0.18 nm, and the first maximum scattering occurs at 80° relative to the normal to the surface. (e = 1.60 × 10-19 C, melectron = 9.11 × 10-13 kg, h = 6.626 × 10-34 J ? s) (a) What is the wavelength of the electrons? (b) What potential difference accelerated the electrons if they started from rest?