Answer:
Tension= 475N
Force= 225N
Explanation:
The question is not complete, here is the complete question
Also, see attached a free body diagram for your reference
<em>"A 20.0-kg uniform plank is supported by the floor at one end by a vertical rope at the other as shown in the figure. A 50.0-kg mass person stands on the plank a distance three-fourths of the length plank from the end on the floor.
</em>
<em>a. What is the tension in the rope?
</em>
<em>b. What is the magnitude of the force that the floor exerts on the plank?"</em>
<em />
given data
mass of man=50kg
mass of plank=20kg
length of plank=10m
<em />
let us make the lenght of the rope be d
The torque about the floor
That is taking moment about the floor
Force will be also zero
<em />
Answer:
one of them is the answer
Explanation:
Air entering the potential space of the pleural cavity is called pneumothorax.
Here, Your Secret word would be Respiratory system of human body which helps in transporting/Exchange in gases
In short, Your Answer would be "Respiratory"
Hope this helps!
Answer:
B. 7
Explanation:
Fluorine has 7 valence electrons in its orbitals.
The valence electrons are electrons in the outermost shell of an atom. Every element has a certain amount of valence electrons.
- Fluorine belongs to the 7 - group on the periodic table.
- Every element in this group has 7 electrons in their outermost shell.
- The elements in the group are called halogens.
- Other elements in this group are fluorine, chlorine, bromine, iodine and astatine.