Answer:
The net force on the car is 2560 N.
Explanation:
According to work energy theorem, the amount of work done is equal to the change of kinetic energy by an object. If '' be the work done on an object to change its kinetic energy from an initial value '' to the final value '', then mathematically,
where '' is the mass of the object and '' and '' be the initial and final velocity of the object respectively. If '' be the net force applied on the car, as per given problem, and '' is the displacement occurs then we can write,
Given, .
Equating equations (I) and (II),
The formal operational stage starts at around age twelve and keeps going into adulthood. Amid this time, individuals build up the capacity to consider conceptual ideas. Abilities, for example, intelligent thought, deductive thinking, and precise arranging likewise rise amid this stage.
Answer:
A) Sodium loses a negative electron when forming chemical bonds.
Explanation:
Sodium always has exactly 11 protons.
When sodium (a metal) reacts with chlorine (a nonmetal), it forms an ionic bond, meaning it loses an electron.
Answer: A cold room
Explanation:
A cold room because cold air is denser.