Match the star's position at points 1, 2, 3, and 4 in the plot with the descriptions below.
a) headed straight toward Earth
b) headed straight away from Earth
c) closest to Earth
d) farthest from Earth
a) headed straight toward Earth
b) headed straight away from Earth
c) closest to Earth
d) farthest from Earth
You might also like to view...
When objects stick together after colliding, the collision is completely elastic
Indicate whether the statement is true or false
The Planck length is the length at which
A) strong nuclear force effects between quarks are expected to become important. B) electric charge becomes a meaningless concept. C) quantum gravitational effects are expected to become important. D) quarks are expected to be squeezed out of existence. E) photons acquire mass and move slower than lightspeed.
A point charge +Q is located on the x axis at x = a, and a second point charge ?Q is located on the x axis at x = ?
a. A Gaussian surface with radius r = 2a is centered at the origin. The flux through this Gaussian surface is a. zero because the negative flux over one hemisphere is equal to the positive flux over the other. b. greater than zero. c. zero because at every point on the surface the electric field has no component perpendicular to the surface. d. zero because the electric field is zero at every point on the surface. e. none of the above.
Which of the following gases, which we can detect (if present) in infrared spectra, would be a strong indicator of life on another planet?
A) water vapor B) sulfuric acid C) carbon dioxide D) methane E) ozone