2 If the mass of a proton is 1-67X10-21
and the mass of an electron is all X10-343
Calculate the force
of
between
a protron and on election
ril two electrons
il two protrons
fake Ga 6:67X10" Nm2 kg distance
between the protrons
4.0m, distance
between the electrons = 2x 102m,
distance between the electrons ex 102m,
distance between the proton and the
electron -
5.4 x 10-11
m

answer: the direction of the wind is expressed as the direction from which the wind is blowing. for example, easterly winds blow from east to west, while westerly winds blow from west to east.

explanation:

the second one and the forth one are in the purple because they are opinions and the rest are in the yellow

explanation:

chemical energy --> gravitational potential energy --> kinetic energy --> elastic potential energy --> gravitational potential energy

explanation:

when emma starts the hike, the chemical energy stored in her body is used to climb up the mountain, and so she gains gravitational potential energy (because at the end, she will be at a higher height h above the ground). then she goes bungee jumping: as she falls, this gravitational potential energy is converted into kinetic energy (because her speed increases as she falls down), until the point when the rope stretches, and she stops moving. at that moment, all the kinetic energy is converted into elastic potential energy due to the stretching of the rope. then, this energy is released because the rope returns to its natural length, and emma gains a small increase in altitude , so she gains some gravitational potential energy.