Suppose we discover a new comet on an orbit that brings it closer to the Sun than Mercury every 125 years. What can we conclude?
A) It has been on its current orbit for only a short time compared to the age of our solar system.
B) It came from the Oort cloud.
C) It came from the Kuiper belt.
D) It has a coma and tail during most of each orbit.
A) It has been on its current orbit for only a short time compared to the age of our solar system.
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The retrograde spin of Venus could be the result of a collision with a large planetesimal.
Answer the following statement true (T) or false (F)
If the interplanar spacing of NaCl is 2.814 × 10?10 m, what is the predicted angle at which X-rays of wavelength 0.140 nm will be diffracted in a first-order maximum?
A. 31.3° B. 7.20° C. 20.5° D. 14.4° E. 29.8°
A photograph of the two-dimensional elastic collision of two particles shows a particle of mass m1 approaching a stationary particle of mass m2
As a result of their interaction, the incident particle moves away along a line that makes an angle of 30° with its original path, and the other particle moves away along a line that makes an angle of 30° to the other side of the original path of the incident particle. What is the ratio of the masses, m1/m2? A) 0.5 B) 1 C) 2 D) 3 E) 4
The proper abbreviation for ‘kilohertz' is ‘kHz.'
Indicate whether the statement is true or false