Answer:
Explanation:
The first diagram (by the left) is an endothermic reaction. In this reaction, the products are higher in energy than the reactants. Heat/Energy is absorbed in this reaction and enthalpy is positive. In second diagram (by the right) is an exothermic reaction. In this reaction, the reactants are higher in energy than the products. In this reaction, heat/energy is released.
Answer:
F=0
Explanation:
Newton's second law states that the sum of the external forces is equal to the product of the mass and the acceleration of the body
F = m a
in this case it tells us that the velocity is constant so the acceleration must be zero,
therefore the sum of the external forces is zero; as they indicate that the surface is frictionless, there is no force applied to the system to maintain a constant speed
F = 0
The answer is 48Kmh because it is 120km divided by 2.5 or 2 and a half hours
<span>The electric force between two charged objects depends on
the product of their charges and the distance between them.</span>
