A 1500-W heater is connected to a 120-V line for 2.0 hours. How much thermal energy is produced?
A) 1.5 kJ
B) 3.0 kJ
C) 0.18 MJ
D) 11 MJ
D
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The third-quarter Moon rises at noon
a. True b. False Indicate whether the statement is true or false
Exclusion Principle: A hydrogen atom is in the 6h state. Which one of the following is not a magnetic quantum number for that state?
A. 0 B. 1 C. 2 D. 4 E. 6
A 4.0-kg mass attached to the end of a string swings in a vertical circle of radius 2.0 m. When the string makes an angle of 35° with the vertical as shown, the speed of the mass is 5.0 m/s. At this instant what is the magnitude of the force the string exerts on the mass?
a.
50 N
b.
82 N
c.
89 N
d.
11 N
e.
61 N
Some of the biggest stars like VY Canis Majoris is almost the size of.
A.) The Asteroid Belt. B.) Our Solar System. C.) The Orion Nebula. D.) The Orion arm of the Galaxy. E.) The Milky Way.