A projectile is thrown upward at 24° with the vertical and returns to the horizontal ground 12.5 s later with no air drag
(a) How fast was it thrown?
(b) How far from its original position did it land?
(c) How high above its original position did it go?
(a) 67 m/s (b) 340 m (c) 190 m
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A parallel plate capacitor of capacitance C0 has plates of area A with separation d between them. When it is connected to a battery of voltage V0, it has charge of magnitude Q0 on its plates. The plates are pulled apart to a separation 2d while the capacitor remains connected to the battery. After the plates are 2d apart, the capacitance of the capacitor and the magnitude of the charge on the plates are what?
A.
C0, 
Q0B.
C0, Q0C.
D.
E.
Which of the following quantities are "quantized?"
1. The potential energy at each rung of a ladder. 2. The potential energy along the length of a slide. 3. Wavelength of a standing wave on a string. 4. The settings on an analog radio dial. 5. The settings on a digital radio dial. A. 1 and 3 B. 2 and 4 C. 1, 3, and 4 D. 1, 3, and 5
A light source blinks once per second in its own frame of reference. As you approach the blinking source, you observe the frequency of blinks to be
A) less than 1 Hz. B) 1 Hz. C) more than 1 Hz.
The quantum mechanical model of the hydrogen atom requires that if the principal quantum number = 4, there will be how many permitted orbital quantum numbers?
a. 2 b. 4 c. 8 d. 16 e. 32