It would fall under Mathematics
Answer:MNO2 is a depolarizer in a dry cell
Explanation:
MNO2 is depolarizer in a dry cell. depolarizers are chemicals used to reduce or prevent polarization of cells
Answer: The handle of a frying pan on the stove
Explanation: Convection is the heat transfer done by the movement of a fluid, or the molecules on it. This can happen by the change on density from fluids, when a fluid tempeture rise, it expands, rising his volumen and decreasing his density. When this happens the fluid becomes lighter, so it moves.
The handle of a frying pan gets hotter but no molecular movement is done. It is between the same material there is a energy transfer from the source to the rest of the pan. This is called Conduction.
To solve this problem we will apply the concepts related to the Impulse which can be defined as the product between mass and the total change in velocity. That is to say

Here,
m = mass
Change in velocity
As we can see there are two types of velocity at the moment the object makes the impact,
the first would be the initial velocity perpendicular to the wall and the final velocity perpendicular to the wall.
That is to say,


El angulo dado es de 45° y la velocidad de 25, por tanto


The change of sign indicates a change in the direction of the object.
Therefore the impulse would be as


The negative sign indicates that the pulse is in the opposite direction of the initial velocity.