When space probe Voyager 2 passed by Saturn, its speed increased (but not due to firing its engines). What must have happened?
A) Saturn must have lost a tiny bit of its orbital energy.
B) Voyager 2 must have dipped through Saturn's atmosphere.
C) Saturn's rotation must have sped up slightly.
D) Saturn must have captured an asteroid at precisely the moment that Voyager 2 passed by.
A) Saturn must have lost a tiny bit of its orbital energy.
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Diffraction Gratings: The distance between the ruled lines on a diffraction grating is 1900 nm. The grating is illuminated at normal incidence with a parallel beam of white light in the 400 nm to 700 nm wavelength band. What is the angular width of the gap between the first order spectrum and the second order spectrum?
A. 3.3° B. 4.3° C. 5.3° D. 6.3° E. 2.3°
Free Fall: A stone is thrown with an initial upward velocity of 7.0 m/s and experiences negligible air resistance. If we take upward as the positive direction, what is the velocity of the stone after 0.50 s?
A. 2.1 m/s B. 4.9 m/s C. -2.1 m/s D. -4.9 m/s E. 0.00 m/s
A cyclotron operates at 10. MHz. What magnetic field is needed to accelerate protons?
A) 0.25 T B) 0.25 Gauss C) 0.12 T D) 1.1 T E) 0.66 T
Three point charges are placed on the x-axis. A charge of +2.0 ?C is placed at the origin, -2.0 ?C to the right at x = 50 cm, and +4.0 ?C at the 100 cm mark
What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?