Answer :
1) Luster → the shininess of a material
2) Freezing point → temperature at which a liquid becomes a solid
3) Viscosity → the measure of a substance's resistance to flow
4) Solubility → ability to dissolve in another substance
5) Ductility → able to be pulled into a wire
Explanation :
Luster : It is defined as the material which has the shining property.
Freezing point : It is the temperature at which the phase changes from liquid state to solid state at low temperature.
Viscosity : It measures the resistance of the liquids to flow .
Solubility : It is defined as the ability of a substance (solute) to dissolve into a liquid (solvent).
Ductility : It is defined as the ability of a metal into a thin wire without breaking.
Gravitational potential energy can be described as m*g*h (mass times gravity times height).
Originally,
15kg * 9.8m/s^2 *0.3 m = 44.1 kg*m^2/s^2 = 44.1 Joules.
After it is moved to a 1m shelf:
15kg * 9.8m/s * 1 = 147 kg*m^2/s^2= 147 Joules.
To find how much energy was added, we subtract final energy from initial energy:
147 J - 44.1 J = 102.9 Joules.
To solve this problem it is necessary to resort to the energy conservation equations, both kinetic and electrical.
By Coulomb's law, electrical energy is defined as
Where,
EE = Electrostatic potential energy
q= charge
d = distance between the charged particles
k = Coulomb's law constant
While kinetic energy is defined as
Where,
m= mass
v = velocity
There by conservation of energy we have that
EE= KE
There is not Initial kinetic energy, then
Replacing with our values we have,
Therefore the speed of particle B at the instat when the particles are 3m apart is 
Answer:
c
Explanation:
it is impossible to have negative acceleration
