For the ground state of the hydrogen atom, which of the following represents the correct value of the magnetic quantum number?
A) -1
B) 0
C) 1
D) 2
E) -2
B
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A ball is projected upward at time t = 0.00 s, from a point on a roof 70 m above the ground and experiences negligible air resistance. The ball rises, then falls and strikes the ground
The initial velocity of the ball is Consider all quantities as positive in the upward direction. The velocity of the ball when it is above the ground is closest to A) -38 m/s. B) -30 m/s. C) -23 m/s. D) -15 m/s. E) -45 m/s.
Red sunset, red lunar eclipses, blue skies, and reflection nebulae are all the result of the ________ of visible light off tiny dust particles
Fill in the blank(s) with correct word
A 0.40-kg mass attached to the end of a string swings in a vertical circle having a radius of 1.8 m. At an instant when the string makes an angle of 40 degrees below the horizontal, the speed of the mass is 5.0 m/s. What is the magnitude of the tension in the string at this instant?
a. 9.5 N b. 3.0 N c. 8.1 N d. 5.6 N e. 4.7 N
An air-filled capacitor has a potential difference between the plates of 80 V. If the charge on each of the plates of the capacitor has magnitude 8.0 ?C, what is the electrical energy stored by this capacitor?
A) 640 µJ B) 320 µJ C) 50 nJ D) 60 nJ E) 30 pJ