Answer:
Electromagnetic waves
Electromagnetic waves bring energy into a system by virtue of their electric and magnetic fields. These fields can exert forces and move charges in the system and, thus, do work on them. However, there is energy in an electromagnetic wave itself, whether it is absorbed or not.
So the answer is B electrical energy
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How does the ability to regrow their own limbs benefit lizards?
A decomposition reaction would be the electrolysis.
<span>Usually it is separated in two equations, one for oxidation
and another for reduction, which are called half reactions:</span>
2 H+ + 2e− → H2
2 H2O → O2 + 4 H+ + 4e−
Then you should add them up. In order for the equation to be
balanced, the first equation has to be added twice:
2 H+ + 2e− + 2 H+ + 2e−+2
H2O → H2+ H2 + O2
+ 4 H+ + 4e−
4 H+ + 4e− +2 H2O → 2H2
+ O2 + 4 H+ + 4e−
Then you should cancel the substances which are both in reactives
and in products, and also the electrons:
2 H2O → 2H2 + O2
And there you have the overall equation for electrolysis.
Electrolysis does not happen naturally – you have to provide
electric energy for it to happen.
A synthesis reaction would be the opposite reaction, which
would be called: electrosyntesis.
2H2 + O2 → 2 H2O
Answer:
The objects will stick together and move with common final velocity.
Explanation:
In an isolated system, there are no external forces acting on the object. Let there are two objects say object A and B. It is supposed that an isolated system in which two objects about to collide have equal and opposite momenta.
In an inelastic collision, the momentum of the objects after the collision remains while the kinetic energy is not conserved. Some of the energy is lost. After the collision, the objects will stick together and move with one common velocity.
Hence, the correct option is (b) "The objects will stick together and move with common final velocity".
Note: If the question asked for work done by the car, then it will be equal to the kinetic energy of the body.