Estimate the radius of a nucleus with mass 50 u. (mneutron ? mproton = 1.67 × 10-27 kg)
A) about 8.5 fm B) about 3.7 fm C) about 4.4 fm D) about 6.2 fm
C
You might also like to view...
Three resistors,
and 
are connected in parallel to a 9.0 V battery. What is the power dissipated by the 
?
A. 2.0 W B. 3.0 W C. 9.0 W D. 27 W E. 81 W
The farthest point of the Sun from the equator is known as the
a. declination. b. solstice. c. latitude. d. equinox.
The number of electric field lines passing through a unit cross-sectional area is indicative of
a. field direction. b. charge density. c. field strength. d. charge motion.
An 800-kHz sinusoidal radio signal is detected at a point 2.1 km distant from a transmitter tower
The electric field amplitude of the signal at that point is 0.80 V/m. Assume that the signal power is radiated uniformly in all directions and that radio waves incident upon the ground are completely absorbed. What is the intensity of the radio signal at that point? (?0 = 8.85 × 10-12 C2/N ? m2, ?0 = 4? × 10-7 T ? m/A, c = 3.0 × 108 m/s) A) 4.2 × 10-4 W/m2 B) 1.7 × 10-3 W/m2 C) 8.5 × 10-4 W/m2 D) 1.2 × 10-3 W/m2 E) 6.0 × 10-4 W/m2