The absolute magnitude of a star is the apparent magnitude it would have if it were 10 pc from Earth
Indicate whether the statement is true or false
T
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For a particular process involving seven variables or parameters having four fundamental dimensions, how many dimensionless numbers can be formed?
What will be an ideal response?
Scientific Notation: Express (2.2 × 106)-1/2 in scientific notation.
A. 6.7 × 10-4 B. 1.5 × 103 C. 1.5 × 10-5 D. 1.5 × 104
Nearly all of the objects that you can see in this photograph are
A) planets. B) stars. C) galaxies. D) astronomical units.
A 12-kg projectile is launched with an initial vertical speed of 20 m/s. It rises to a maximum height of 18 m above the launch point. What is the change in mechanical energy caused by the dissipative (air) resistive force on the projectile during this ascent?
A. ?0.64 kJ B. ?0.40 kJ C. ?0.52 kJ D. ?0.28 kJ E. ?0.76 kJ