Some Canadian troops are sent (as part of a U. N. peacekeeping force) to a country located on the Earth's equator. At night, when homesickness makes them gaze sleeplessly at the stars, which of the following will be familiar to them (the same at the equator as in Canada):A) the celestial poles are on the north and south points of the horizonB) the celestial equator is overhead and passes through the zenithC) all stars rise and set (no star remains in the sky all night long)D) all stars are above the horizon exactly half a dayE) none of the above are the same on the equator as in Canada

Which lists the organs in the correct order as food passes from the mouth to anus?

Awave has a wavelength of 7 mm and a frequency of 19 hertz. what is its speed?

Amerry-go-round of radius r, shown in the figure, is rotating at constant angular speed. the friction in its bearings is so small that it can be ignored. a sandbag of mass m is dropped onto the merry-go-round, at a position designated by r. the sandbag does not slip or roll upon contact with the merry-go-round. how would you rank the following different combinations of m and r on the basis of the angular speed of the merry-go-round after the sandbag "sticks" to the merry-go-round from largest to smallest. a) m = 10kg, r = 0.25r b) m = 20kg, r = 0.25r c) m = 10kg, r = 0.50r d) m = 10kg, r = 1.0r e) m = 15kg, r = 0.75r f) m = 40kg, r = 0.25r