As an Electromagnetic Wave Travels Through Free Space,its Speed Can

question 23

Multiple Choice

As an electromagnetic wave travels through free space,its speed can be increased by:

• A)increasing its frequency.
• B)increasing its energy only.
• C)increasing both its energy and momentum.
• D)None of the above will increase its speed.

---

Definitions:

Motor Neurons

Nerve cells that transmit impulses from the central nervous system to muscles or glands, eliciting a response.

Skeletal Muscle

A type of muscle tissue that is attached to bones and enables voluntary movements of the body parts.

Myasthenia Gravis

An autoimmune disorder characterized by weakness and fatigue of the skeletal muscles, caused by a disruption in the communication between nerves and muscles.

Acetylcholinesterase Activity

The process by which the enzyme acetylcholinesterase breaks down acetylcholine, a neurotransmitter, in the synaptic cleft to terminate the transmission of a nerve impulse.