How long is the earth’s precession estimated to last? 6,000 years
13,000 years
23,000 years
100,000 years

Answer;

The most appropriate answer from the choices given would be 23,000 years

Explanation;

The period of Earth's precession is about 26,000 years. In other words, it takes 26,000 years for the axis to trace out the cone one complete time. Earth's spin axis also precesses.

Earth's precession is caused by the gravitational pull of the Sun and the Moon on the Earth.

h let me think

first let us lay out the formula for potential

and kinetic energy:

pe = mgh

ke = (mv^2)/2

where: m=mass, v=velocity, g=gravitational

acceleration, h=height

calculating for mass using the known values of

pe:

340j = m (9.81 m/s^2) (50ft) (1m/3.28ft)

m = 2.27 kg

the law of conservation of energy states that

energy is neither created nor destroyed. therefore, the change in kinetic

energy from 50 ft to 35 ft would be equal to the change in potential energy

from 50 ft to 35 ft. however it would be opposite in signs since one is losing

while other is gaining.

ke(35ft) – ke(50ft) = - [ pe(35ft) – pe(50ft]

ke(50ft) = 0 since the brick is initially at rest

ke(35ft) = 340j - 2.27kg (9.81 m/s^2) (35ft)

(1m/3.28 ft)

ke(35ft)

= 102.38 j