By itself, ________ makes up 70% of the masses of all the planets combined
Fill in the blank(s) with correct word
Jupiter
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Light with a frequency of 8.70 × 1014 Hz is incident on a metal that has a work function of 2.8 eV. What is the maximum kinetic energy that a photoelectron ejected in this process can have?
A) 8.71 × 10-19 J B) 3.11 × 10-19 J C) 1.28 × 10-19 J D) 2.41 × 10-19 J E) 4.52 × 10-19 J
What potential difference is required across an 8.0-? resistor to cause 2.0 A to flow through it?
What will be an ideal response?
A 2.5-mC charge is on the y-axis at y = 3.0 m and a 6.3-mC charge is on the x-axis at x = 3.0 m. What is the direction of the potential at the origin?
A. 22.0
B. 168
C. 292
D. 332
E. potential has no direction
Why are smaller terrestrial bodies such as Mercury or the Moon “geologically dead”?
a. They cooled off faster than Earth did. b. They don’t have erosion. c. They were hit by fewer meteorites than Earth. d. They are made of different materials than Earth.