An aircraft is taking a group of skydivers up into the air. Evan is dressed in
a parachuting outfit, which brings his mass to a total of 90 kg. The aircraft
takes the group to a height of 5,000 m before the jump. How much GPE
does Evan have before he jumps to earth? *

4,410 kJ

Explanation:

Gravitational Potential Enegry (GPE) is calculated as;

GPE = m*g*h                           where;

m = mass (kg)

g = gravity (m/s²)

h = height (meters)

= 90 * 9.8 * 5000

= 4,410,000‬ joules

= 4,410 kJ

hope this

explanation:

covalent bonds

consist of pairs of electrons shared by two atoms, and bind the atoms to fixed orientation and requre high energies to break them

ionic bonds

when two atoms differ considerably in their electronegativity, then one of the atoms will lose its electron to the other atom. this results in a positively charged ion(cation) and a negatively charged ion (anion)

the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.