An electron has a relativistic momentum of 1.1 × 10-21 kg ? m/s. What percent of its total energy is its kinetic energy?
(melectron = 9.11 ×10-31 kg, c = 3.0 × 108 m/s)
76%
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In using ray tracing to graphically locate the image of an object that is placed in front of a lens, describe three simple rays that you could draw that pass by the head of the object
What will be an ideal response?
When Earth overtakes Mars, the outer planet retrogrades near ________
Fill in the blank(s) with correct word
Unlike the other jovian planets, Uranus:
A) has no ring system. B) has only a few satellites. C) has a featureless atmosphere. D) has no internal energy source. E) rotates slowly.
The planet Saturn is approximately 10 times farther away from the Sun than the Earth is. Given this, how much sunlight does it receive compared to the Earth?
A) 1/1,000th B) 1/10,000th C) 1/100th D) 1/10th