As monochromatic light passes from air to glass and back to air, changes occur in its
A) wavelength.
B) speed.
C) both of these
D) neither of these
Answer: C
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If the radiant energy from the sun comes in as a plane EM wave of intensity 1 340 W/m2, calculate the peak values of E and B
a. 300 V/m, 10-4 T b. 1 000 V/m, 3.35 × 10^-6 T c. 225 V/m, 1.60× 10-3 T d. 111 V/m, 3.00 × 10^-5 T e. 711 V/m, 2.37 × 10^-6 T
Part AIo experiences tidal heating primarily because __________.
a. its elliptical orbit causes the tidal force to vary as Io orbits Jupiter. b. it is located very close to Jupiter. c. it is made of relatively soft materials that deform quite easily. d. it has an elongated shape that makes it look more like an egg than a sphere.
In addition to its weight, what force is needed to lift a wire ring of radius 2.0 cm from the surface of blood plasma? The surface tension of blood plasma is 7.3 × 10^¯2 N/m
a. 1.8E+1 N b. 3.7E–2 N c. 9.2E–3 N d. 1.8E–2 N
Dimensional Analysis: Using dimensional analysis, which one of the following equations is dimensionally correct? In these equations, x has units of meters, t has units of seconds, v has units of meters per second, and a has units of meters per second2.
A. x = v/t B. v = 2ax C. t2 = x/a D. x2 = 2av E. x = at