In expressions like ?v and ?t, ? stands for
a. "change in". b. "triangle".
c. a constant of proportionality. d. a variable.
a
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Compare the critical heat flux for a flat horizontal surface with that for a submerged horizontal wire of 3-mm-diameter in water at saturation temperature and pressure.
GIVEN
? Flat, horizontal surface and a submerged, horizontal wire
FIND
(a) Critical heat flux for both geometries
ASSUMPTIONS
? The water is at atmospheric pressure
PROPERTIES AND CONSTANTS
From Appendix 2, Table 13
A crate is given an initial speed of 3.0 m/s up the 25.0° plane shown in Fig. 5–33.
(a) How far up the plane will it go?
(b) How much time elapses before it returns to its starting point?
The capacitance per unit length of a very long coaxial cable, made of two concentric cylinders, is 50 pF/m
What is the radius of the outer cylinder if the radius of the inner one is 1.0 mm? (k = 1/4??0 = 8.99 × 109 N ? m2/C2) A) 0.50 mm B) 4.0 mm C) 2.0 mm D) 3.0 mm E) 1.0 mm
Find the uncertainty in the momentum (in kg ? m/s) of an electron if the uncertainty in its position is equal to 3.4 × 10^?10 m, the circumference of the first Bohr orbit
a. 6.2 × 10^?25 b. 1.6 × 10^?25 c. 15.5 × 10^?25 d. 19.4 × 10^?25 e. 2.0 × 10^?24