Answer:
D) the second at the doorknob
Explanation:
The torque exerted by a force is given by:
where
F is the magnitude of the force
d is the distance between the point of application of the force and the centre of rotation
is the angle between the direction of the force and d
In this problem, we have:
- Two forces of equal magnitude F
- Both forces are perpendicular to the door, so 
- The first force is exerted at the midpoint of the door, while the 2nd force is applied at the doorknob. This means that d is the larger for the 2nd force
--> therefore, the 2nd force exerts a greater torque
Answer:
The pickup truck and hatchback will meet again at 440.896 m
Explanation:
Let us assume that both vehicles are at origin at the start means initial position is zero i.e. 
= 0. Both the vehicles will cross each other at same time so we will make equations for both and will solve for time.
Truck:
= 33.2 m/s, a = 0 (since the velocity is constant), = 0
Using 
s = 33.2t .......... eq (1)
Hatchback:
, = 0 m/s (since initial velocity is zero), = 0
Using
putting in the data we will get
now putting 's' value from eq (1)
which will give,
t = 13.28 s
so both vehicles will meet up gain after 13.28 sec.
putting t = 13.28 in eq (1) will give
s = 440.896 m
So, both vehicles will meet up again at 440.896 m.
Answer:
i don't know if this is good for you but
Explanation:
ignoring frictional air resistance (drag) the speed on return is the same as when it left the ground (5 m/s but in the opposite direction).
Note: this points out a good reason for not firing live bullets into the air..they will return somewhere and at the same speed.
However, if you take into account the atmospheric drag the reurn speed will be somewhat smaller (but in the case of a bullet, probably still lethal.) Drag depends on many factors and is difficult to calculate.
600km since it would be 1350 divided by 2.25
The types of chemical reactions are as follows:
- Combination reactions
- Decomposition reactions
- Double decomposition
- Thermal dissociation
- Redox reactions
<h3>What the are the types of reactions?</h3>
Chemical reactions are changes in which new substances are formed.
The types of chemical reactions are as follows:
- Combination reactions - these are reactions in which two or more substances combine to form a single compound
- Decomposition reactions - these are reactions in which a larger compound splits into smaller substances
- Displacement reactions - these are reactions in which one element or radical replaces another in a compound
- Double decomposition - these are reactions in which two substances exchange their radicals to form new compounds.
- Thermal dissociation - these reactions involves heating compounds to split them into smaller substances.
- Redox reactions - these are reactions in which oxidation and reduction reactions occur simultaneously.
In conclusion, chemical reactions produce new substances.
Learn more about chemical reactions at: brainly.com/question/11231920
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