Which step of a muscle contraction can be described as the longest sarcomere, where actin and myosin are the least overlapped? step 1 step 2 step 3 step 4

Answer: Step 1

During step one no impulse has occurred yet. Thus, the muscle fiber is relaxed (at rest). The sarcomere is at its longest possible length due do the fact that myosin is not bound to the actin.

This step will end when the brain or spinal cord will send an impulse to the muscle. This will travel through the motor neuron and reach the neuromuscular junction. Here acetylcholine will be released, which in turn will trigger the impulse in the muscle.

i believe you meant to say air rather than hair so the answer is below ")

the dead sea, the lowest place on earth at 430 metres (1,410 ft) below sea level, has a correspondingly high typical atmospheric pressure of 1065 hpa.