The GALEX observatory was a recent observatory. that was launched to observe over a half-billion galaxies going back to when our Universe was just about 3 billion years old. It used wavelengths of higher energy than visible light. Which of these could describe the wavelengths used by the GALEX observatory to make observations in space?
A) microwaves
B) radio waves
C) infrared waves
D) ultraviolet waves

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

you need to have a picture of the atom that way we can answer it

answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;