If the distance between the slits is doubled in Young’s experiment, what happens to the width of the central maximum?
1.The width is doubled.
2.The width is unchanged.
3.The width is halved.
3
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A deuteron, with the same charge but twice the mass of a proton, moves with a speed of 6.0 × 10^5 m/s perpendicular to a uniform magnetic field of 0.20 T. Which of the paths described below would it follow? (qp = 1.6 × 10^-19 C and md = 3.34 × 10^-27 kg)
a. a circular path of 6.3-cm radius c. a circular path of 3.1-cm radius b. a circular path of 1.6-cm radius d. a straight line path
By what factor must one change the weight suspended vertically from a spring coil in order to increase its period of simple harmonic motion by five?
a. 1/25 b. 1/5 c. 5 d. 25 e. 1
We find from Gauss's law that the flux through a closed surface
A. is proportional to the net charge enclosed. B. is inversely proportional to the net charge enclosed. C. is proportional to the square root of the charge enclosed. D. is zero. E. is less the larger the closed surface.
The 21-cm line of hydrogen is strongly absorbed by interstellar dust
Indicate whether the statement is true or false