Answer: Earth formed when gravity pulled swirling gas and dust in to become the third planet from the Sun. Like its fellow terrestrial planets, Earth has a central core, a rocky mantle and a solid crust
Answer:
A
Explanation:
The distance between the water molecules increases. As temperature increases the water molecules gain energy and move more rapidly and this results in the molecules getting further apart
Answer:
The energy released is 5.31 10¹⁴ J
Explanation:
Einstein found an expression to relate the changes of energy matter that is
ΔE = Δm C²
This energy is called energize rest, in case of matter in motion the term of kinetic energy must be added
We can use this equation to find the transformation of the matter in energy
ΔE = 5.9 10⁻³ (3 10⁸)²
ΔE = 5.31 10¹⁴ (Kg m² /s²)
ΔE = 5.31 10¹⁴ J
The energy released is 5.31 10¹⁴ J
Answer:
2560J
Explanation:
KE= 1/2mv^2 so plug in the numbers to get
KE= 1/2 (80)(8)^2
KE= 2560
Answer:
A. If the sum of the external forces on an object is zero, then the object must be in equilibrium
Explanation:
Equilibrium, in physics, the condition of a system when neither its state of motion nor its internal energy state tends to change with time.
For a single particle, equilibrium arises if the vector sum of all forces acting upon the particle is zero.
the object is at equilibrium, then the net force acting upon the object should be 0 Newton. Thus, if all the forces are added together as vectors, then the resultant force (the vector sum) should be 0 Newton.
There are three types of equilibrium: stable, unstable, and neutral
