A1200.0 kg elevator is resting on the bottom floor and is being pulled upward by a cable (but is not moving). if the tension in the cable is 5240 n, what is the magnitude of the normal force acting on the elevator? a. 5240 n b. 4040 n с, 6520 n d. 11800 n 15. how much momentum does a 25 kg child have that is moving at 1 km/h? a. 174 kg m/s b. 6.94 kg'm/s c, 25.0 kg. m/s d. 12.5 kg m/s 16. a 5.40 kg block is placed on a ramp which is inclined at 32.0°, and begins sliding down. the coefficient of friction between the ramp and the block is 0.230. what is the magnitude of the block's acceleration? a. 3.28 m/s2 b. 1.91 m/s2 c. 7.10 m/s2 d. 5.19 m/s2 17. the force of gravity between two 5.00 kg objects is 5.70 x10-7 n. what is the distance between these objects? a. 2.42 m b. 0.0541 m c. 0.0242 m d. 5.41 m 18. a coin is thrown vertically upward with velocity 24.5 m/s at the edge of a cliff having a height of 24.0 m. with what speed does the coin hit the ground? a. 32.7 m/s b. 0 m/s c. 26.5 m/s d. 38.4 m/s

it is the second option.

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

attach the statements so i can answer : )