At the equinoxes, the declination of the Sun must be zero degrees
Indicate whether the statement is true or false
TRUE
You might also like to view...
Which of the following statements about electromagnetic waves in free space are true?
A. The higher-frequency travel faster than the lower-frequency waves. B. The higher-frequency waves have shorter wavelengths than the lower-frequency waves. C. The wavelengths of the visible waves are some of the longest electromagnetic waves. D. The wavelengths of the visible waves are some of the shortest electromagnetic waves. E. The electric field vector is always at right angles to the magnetic field vector.
In the formula E=mc2, what does E represent?
A) the mass-energy, or potential energy stored in an object's mass B) the kinetic energy of a moving object C) the radiative energy carried by light D) the gravitational potential energy of an object held above the ground
Quantization of electron energy states in an atom is better understood in terms of the electron's
A) wave nature. B) particle nature. C) neither of these
Consider a star with 2 planets. The mass of planet A is the same as the mass of planet B. The orbit of Planet A is on average, closer to the star than the orbit of Planet B. Which of the following statements is true?
A) Planet A moves with the same speed as Planet B. B) Planet A is, on average, moving slower than Planet B. C) The relative orbital speeds depend on the masses of the planets. D) Planet A is, on average, moving faster than Planet B.