Heat from the Sun gets to Earth by the process of
1) osmosis.
2) radiation.
3) molecular movement.
4) convection.
5) conduction.
When sunlight reaches Earth, it becomes
6) internal energy.
7) solar energy.
8) electromagnetic radiation.
Answer: 2, 6
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A projectile is projected from the origin with a velocity of 45.0 m/s at an angle of 30.0 degrees above the horizontal. What is the velocity when the projectile hits the ground?
A. Vx = 35.7 m/s, Vy = -22.5 m/s B. Vx = 39.0 m/s, Vy = -22.5 m/s C. Vx = 35.7 m/s, Vy = -39.0 m/s D. Vx = 39.0 m/s, Vy = -35.7 m/s E. Vx = 22.5 m/s, Vy = -22.5 m/s
The region in which charged particles are trapped by our magnetic fields is the
A) Aurora. B) ozone layers. C) Van Allen radiation belt. D) exosphere. E) ionosphere.
Answer the following statement(s) true (T) or false (F)
1. Suppose we have a vial of quantum systems that could either be boxes or harmonic oscillators. When we excite these systems and look at their emission spectra, we see two visible lines, whose wavelengths we measure. From this data, we can determine which kind of system we have. 2. Suppose we measure the wavelengths of the absorption lines of a vibrating diatomic molecule involving atoms whose masses we know. From this data, we can deduce the effective spring constant ks of the bond holding these atoms together.
Must all physically reasonable wavefunctions remain finite as 
, or does this apply only to solutions to the Schrödinger equation (B)?
A. 
B. Does this apply only to solutions to the Schrödinger equation