If it were possible to move a star closer to Earth then its apparent magnitude number would ________ while its absolute magnitude number would ________.
A. increase; stay the same
B. decrease; stay the same
C. increase; decrease
D. decrease; increase
Answer: B
You might also like to view...
13.0 g of water in a 3.25-L pressure vessel is heated to 480°C. What is the pressure inside the container? (R = 0.082 L/atm/mol/K, one mole of water has a mass of 18 grams)
a. 24.7 atm b. 13.7 atm c. 8.75 atm d. 15.7 atm e. 19.8 atm
Mixtures can be separated into their components by taking advantage of differences in the chemical properties of the components
Why might this separation method be less convenient than taking advantage of differences in the physical properties of the components? A) A chemical property involves a chemical change so that you no longer have what you had. B) Chemical properties are not as apparent as are physical properties. C) The chemical properties of the components of a mixture are too similar to each other. D) The chemical properties of the components of a mixture are too different from each other.
A proton (mass = 1.67 × 10^?27 kg, charge = 1.60 × 10^?19 C) moves from point A to point B under the influence of an electrostatic force only. At point A the proton moves with a speed of 60 km/s. At point B the speed of the proton is 80 km/s. Determine the potential difference VB ? VA
a. +15 V b. ?15 V c. ?33 V d. +33 V e. ?20 V
A rocket, initially at rest, is fired vertically with an upward acceleration of 10 m/s2 . At an altitude of 0.50 km, the engine of the rocket cuts off. What is the maximum altitude it achieves?
a. 1.9 km b. 1.3 km c. 1.6 km d. 1.0 km e. 2.1 km