How many neutrons are in a 15C nucleus?

A. 7
B. 8
C. 6
D. 9


D. 9

Physics & Space Science

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If the applied electric field has a frequency of 1016 Hz, the type of polarization present in a dielectric is:

(a) Electron current flow (b) Electronic (c) Ionic (d) Orientational

Physics & Space Science

A wall consists of 2 layers of material: brick in front of an equal thickness of wood

If the respective thermal conductivities of the brick and wood are 1.3 J/m-s-C and 0.15 J/m-s-C, how does the temperature gradient across the wood compare to the gradient across the brick?

Physics & Space Science

A 200-? resistor, a 40-mH inductor, and a 2.0-?F capacitor are connected in series with a 120-V rms source at 1.0 kHz. What is the phase angle of this circuit?

A) 0° B) 45° C) 49° D) 41° E) 90°

Physics & Space Science

Exhibit 7-1 Three 5.0-kg masses are located at points in the xy plane as shown in the figure. ? ? Use this exhibit to answer the following question(s). Refer to Exhibit 7-1. What is the magnitude of the resultant force (caused by the other two masses) on the mass at the origin?

A. 2.7 × 10?8 N B. 2.1 × 10?8 N C. 1.8 × 10?8 N D. 2.4 × 10?8 N E. 2.9 × 10?8 N

Physics & Space Science