A75-kg refrigerator is located on the 70th floor of a skyscraper (300 meters above the ground). what is the potential energy of the refrigerator?

Potential energy is the stored energy in an object due to its position with respect to some reference (normally ground).

We will use the formula:

P.E.  = mgh

Where P.E. is the potential energy,  m is the mass of the body , h is the height of the body's displacement and g is the acceleration due to gravity which is constant on earth and is 9.8 m/s²

 P.E. = 75kg × 9.8m/s² × 300 m

P.E. = 22,500kgm × 9.8m/s²

P.E. = 220,500 Nm

P.E. = 220,500 joules

answer: option (4) is the correct answer.

explanation:

areas which are at low altitudes and near the equator tend to receive direct sunlight from the sun. hence, heat energy or radiations from the sun make these areas warmer and they have warmest water.

whereas areas which are at high altitudes and away from the equator do no receive direct sunlight. hence, no direct contact from the sun makes these regions colder and thus, they have colder water.

thus, we can conclude that the statement areas at low latitudes near the equator have the warmest water because they receive the most direct sunlight best explains the relationship between an area's geography and the temperature of its surface water.

c. is the answer

by love gaming