Final answer:
The pressure in megapascals (MPa) cannot be calculated because the area of contact is not provided. To find the pressure we need to divide the force by the contact area and then convert the result from pascals to megapascals if needed.
Step-by-step explanation:
The pressure exerted on the wall by the hammer when it strikes a nail cannot be determined with the provided information alone. To calculate pressure, we need to know the area over which the force is applied. In physics problems such as these, we often use the formula Pressure (P) = Force (F) / Area (A), where pressure is in pascals (Pa), force is in newtons (N), and area is in square meters (m²). Megapascals (MPa) is simply a unit that represents one million pascals. To convert pascals to megapascals, one would divide the number of pascals by one million (10⁶).
Since we are only given the force of 104 N but no area, we cannot answer the multiple-choice question provided. However, as an example, if we were given a specific area - such as the 1.00 mm diameter tip from a related problem - we would first calculate the area of the circular tip in square meters, then divide the given force by that area to get the pressure in pascals, and finally convert pascals to megapascals if needed.