What is astrometry?
A) measuring the positions of stars on the sky
B) measuring the velocities of stars via the Doppler effect
C) using metric units for distance (e.g., meters rather than light years)
D) measuring distances to stars
E) searching for planets around stars
A
You might also like to view...
Conservation of Momentum: In a police ballistics test, 2.00-g bullet traveling at 700 m/s suddenly hits and becomes embedded in a stationary 5.00-kg wood block. What is the speed of the block immediately after the bullet has stopped moving relative to the block?
Fill in the blank(s) with the appropriate word(s).
Lenz's Law: According to Lenz's law, the induced current in a circuit always flows to oppose the external magnetic field through the circuit.
A. True B. False
Animated GIF files also contain the instructions and timings to display images in the browser.
Answer the following statement true (T) or false (F)
The ozone layer absorbs infrared radiation from sunlight
a. True b. False Indicate whether the statement is true or false