Mercury is a very small planet, with a surface that is exposed directly to space. This is because the planet has practically no atmosphere. Normally, no atmosphere would mean very cold, but it is very hot on Mercury. Why?
A)
Since it is so small, it generates its own heat.
B)
Because Mercury is the closest planet to the sun.
C)
Because of the Mercurial volcanoes on the planets surface.
D)
Their are hot springs on the surface that constantly boil.

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

i just calculated it all out, and not including weekends, and all the different days off. as of this school year (2018-2019) students are spending 2198 hours in school this year

girl imma just put my comment here because i need a couple point okurrttt