Final answer:
Several true/false physics related and general knowledge statements were examined, with each conclusion varying based on context, such as a vector forming the shape of a right-angle triangle is true and the amplitude of waves being affected only when aligned is false.
Step-by-step explanation:
The statement "If R is delivered first, then X is delivered fourth" does not have enough context or information to be determined as true or false. However, when addressing similar true or false questions:
- The displacement of a person walking 2 blocks east and 5 blocks north is the same as the displacement of another person walking 5 blocks north and then two blocks east. So, the statement is false.
- A vector can indeed form the shape of a right-angle triangle with its x and y components, making this statement true.
- The position vs time graph of an object that is speeding up is not a straight line but a curve, which means the statement is false.
For non-physics statements provided:
- According to the doctrine of predestination, it is believed that a person was either saved or dam_ned from the time of his birth, making the statement true.
- The amplitude of one wave is affected by the amplitude of another wave only when they are precisely aligned, meaning the statement is false.
- A pebble dropped in water creates a pulse wave, thus the statement is true.
- The length of the resultant vector obtained from the addition of two vectors at right angles can be calculated using the Pythagorean theorem, so this statement is true.