A spaceship approaching an asteroid at a speed of 0.60c launches a scout rocket with speed 0.40c relative to the spaceship. At what speed is the scout rocket approaching the asteroid?
A) 0.81c
B) 1.0c
C) 0.76c
D) 0.64c
E) 0.96c
A
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Diffraction Gratings: Consider an experiment using a diffraction grating with 7000 lines/cm, a screen 2.50 m away, and a 440-nm wavelength beam of light.(a) How many side maxima will be observed on one side of the central maximum?(b) How far apart on the screen are the first-order and second-order maxima on the same side of the central maximum?
What will be an ideal response?
When dividing several quantities, the number of significant digits in the result must always be
A) larger than the number of significant digits in the most accurate of the quantities. B) equal to the number of significant digits in the most accurate of the quantities. C) equal to the average number of significant digits in the most and least accurate of the quantities. D) equal to the number of significant digits in the least accurate of the quantities. E) smaller than the number of significant digits in the least accurate of the quantities.
The direction of an electric field is defined as the direction of force on
A) a positively-charged particle. B) a negatively-charged particle. C) any charged particle.
A ray of light traveling in air makes a 63.0° angle with respect to the normal of the surface of a liquid. It travels in the liquid at a 39.2° angle with respect to the normal
Find the critical angle for total internal reflection for this interface.