Note the expression: y = x2 . Which statement is most consistent with this expression?
a. if y doubles, then x quadruples
c. if x doubles, then y doubles
b. y is greater than x
d. if x doubles, then y quadruples
D
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Venus is almost the same size, mass, and density as the Earth
Indicate whether the statement is true or false
Wilhelm Roentgen discovered
a. X-rays. b. gamma rays. c. radio waves. d. microwaves.
An 8.00-mW laser beam emits a cylindrical beam of single-wavelength sinusoidal light 0.600 mm in diameter. What is the maximum value of the magnetic field in the laser beam?
(?0 = 8.85 × 10-12 C2/N ? m2, ?0 = 4? × 10-7 T ? m/A, c = 3.0 × 108 m/s) A) 20.5 µT B) 17.2 µT C) 12.4 µT D) 15.4 µT E) 9.24 µT
Two singly ionized isotopes, X and Y, of the same element move with the same speed perpendicular to a uniform magnetic field. Isotope X follows a path of radius 3.35 cm while isotope Y moves along a path 3.43 cm in radius. What is the ratio of the two isotope masses, mY/mX?
a. 0.977 c. 1.05 b. 0.954 d. 1.02