Answer:
Positive feedback is used to build more contractions.
Explanation:
Positive feedback mechanism in humans is also observed during childbirth which is induced by the pressing of the ovarian wall by the baby.
The pressing sensation is passed to the brain via different nerves, and in response, the brain stimulates the pituitary to produce oxytocin.
Oxytocin is responsible for the contractions of the uterine muscles which cause the movement of the fetus towards the cervix, further increasing the stimulus.
The positive feedback loop continues until the baby is born.
If one has an esophageal cancer it is important to have a good nutrition. Treatment can make it hard thus a soft diet and high protein food is recommended.A tube feeding would be ideal if anything can't be eaten through mouth. A tube called J tube can be put in one's small intestine or G tube if put in a stomach. Parenteral nutrition can also be done if there is an intravenous drip.
The complication that the nurse will most probably anticipate is severe bleeding and thrombus formation. Venous thromboembolism is a condition that involves the formation of blood clots. These blood clots could dangerously travel to the lungs and block some of the blood supply. Warfarin is a drug prescribed as an anticoagulant since it causes the blood to be thinner. It has been proven that warfarin can interact with some herbal medications. Depending on the type of herbal medications, this interaction can inhibit and enhance warfarin's action. In the case of enhancement, severe bleeding could occur, while inhibition of warfarin's action could lead to thrombosis (formation of blood clots).
Answer:
Relative velocity simply means velocity relative to a certain observe point, in this case, the river shore.
This is a type of complex movement; a boat is moving with a certain velocity, let's say 8 m/s. However, the river this boat moves on also has its velocity, let's say 2 m/s. Since the shore isn't moving, the velocity of the boat relative to the shore will be simple resultant velocity of the boat's and the river's velocities.
Let's illustrate this with two examples:
1) if the boat is moving downstream both are moving in the same direction, so the resultant will be 8 m/s + 2 m/s = 10 m/s.
So, any spectator looking at the boat from the shore will think its velocity is 10 m/s, when in reality it's 8 m/s.
2) if the boat is moving upstream, these two velocities have opposite directions, so the resultant will be 8 - 2 = 6 m/s
So, as a short summary, relative speed is an object's speed in regard to another chosen referent point.
