Answer:
gravity
Explanation:
Gravity pulls the planets toward the Sun. Gravity pulls the moon toward Earth. Gravity pulls us toward the Earth. Gravity is a force. Inertia.
Answer:
The answers are options B,D and E
Explanation:
B) The particles in the liquid are slowly overcoming the forces of attraction and spreading out due to the thermal energy they are absorbing. This makes the liquid less dense as it slowly changes into a gas after reaching its boiling point.
D) The particles start absorbing the energy form the surroundings as latent heat of evaporation. They need this energy to overcome the strong forces of attraction between particles to change into the gaseous state
E) The particles have spaced out due to the thermal energy absorbed, making the liquid lighter and it rises upwards.
Within the elastic limit of a solid material, the deformation (strain) produced by a force (stress) of any kind is proportional to the force. If the elastic limit is not exceeded, the material returns to it original shape and size after the force is removed, other it remains deformed or stretched.
Answer:
-2.85 * 10^(-17) J
Explanation:
Parameters given:
Final velocity, v = 9 * 10^6 m/s
Initial velocity, u = 4.5 * 10^6 m/s
Using the conservation of energy formula, total energy is conserved:
K.Ein + PEin = KEf + PEf
K.Ef - K.Ein = P.Ein - P.Ef
=> -∆P.E = K.Ef - K.Ein
∆P.E = K.Ein - K.Ef
∆P.E = ½mu² - ½mv²
∆P.E = ½m[(4.5 * 10^6)² - (9 * 10^6)²]
∆P.E = ½ * 9.31 * 10^(-31) * (-61.25 * 10¹²)
∆P.E = -2.85 * 10^(-17) J
