A person sees the image of an arrow reflected in a plane mirror. The dashed line in the figure represents the vertical center of the mirror. The person uses an opaque sheet to cover half of the mirror. A vertical mirror with the vertical center marked. The object is an upright arrow some distance in front of the upper half of the mirror. The base of the arrow is a small distance above the vertical center mark of the mirror. A face is in front of the lower half of the mirror and closer to the mirror than the arrow. The eye in the face is approximately the same distance below the vertical center of the mirror as the tip of the arrow is above the vertical center.
In which case will the person still see the image of the arrow?

okay i have so many questions. but the big one here is: um wt..f is this mess? ?

so here is the information for current research:

-nrel's geothermal analysts, scientists, and engineers perform a full range of research from developing advanced methods of locating and accessing geothermal resources to exploring innovative technologies to extract and produce clean energy from the heat of the earth

and here is the information for the technology of geothermal energy:

-it's clean and sustainable

-resources of geothermal energy range from the shallow ground to hot water and hot rock found a few miles beneath the earth's surface, and down even deeper to the extremely high temperatures of molten rock called magma

-almost everywhere, the shallow ground or upper 10 feet of the earth's surface maintains a nearly constant temperature between 50° and 60°f (10° and 16°c)

-geothermal heat pumps can tap into this resource to heat and cool buildings

-a geothermal heat pump system consists of a heat pump, an air delivery system (ductwork), and a heat exchanger-a system of pipes buried in the shallow ground near the building

-in the winter, the heat pump removes heat from the heat exchanger and pumps it into the indoor air delivery system

-in the summer, the process is reversed, and the heat pump moves heat from the indoor air into the heat exchanger

-the heat removed from the indoor air during the summer can also be used to provide a free source of hot water

myth. it was once thought that animals, including cats and dogs, could only see in black and white. however, scientists have proven this to be a myth. in all animals, including humans, the perception of colour is determined by the presence of cells in the eye called cone photoreceptors.