Identify the scenarios below as to whether they would increase, decrease, or not change
the frequency in which a string vibrates and thus change its pitch. Assume that no other
changes are happening.
1. Tightening a string for greater tension
2. Replacing a thin string with a thick string
3. Increasing the effective length of the string

Mike walks 100 meter north, then walks 30 meters south. after this, he walks another 10 meters north. what is the magnitude of his total displacement during this walk,in meters?

The act of moving from one place to another. a. locomotor b. aerobic c. stationary d. static

An engine undergoes a cycle as shown in the diagram. during a complete cycle the work done by the gas is 28.5×103 j and the energy transferred thermally out is 99.4×103 j. there are 1.5×1024 gas molecules and they have three active degrees of freedom. 6. (6 pts) during which process(es) is energy transferred thermally into the gas? a. 1→2 b. 2→3 c. 4→1 d. 1→2 and 4→1 e. none of the above