Number of atoms of each element ammonium hydroxide?
2 answers:
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1. B
It comes from Newton's law of universal gravitation.
<span><span>,
</span></span>
<span><span>
</span></span>
Where:
F is the force between the masses, (the one we are looking for)G is the gravitational constant,m1 is the first mass (Earth)m2 is the second mass (sattelite)r is the distance between the centers of the masses.As you can see except for m2, all other values are the same.
If mass is bigger the force grows.
2. D.
Again check the formula. The bigger distance, the smaller force. So, closer = bigger force.
3.C It will increase.Ohm's law:
Where:
I is the current.
V is voltage
R is the resistance.
In order for current to remain the same, while voltage increases, the resistance has to increase accordingly.
It comes from Newton's law of universal gravitation.
<span><span>,
</span></span>
</span></span>
Where:
F is the force between the masses, (the one we are looking for)G is the gravitational constant,m1 is the first mass (Earth)m2 is the second mass (sattelite)r is the distance between the centers of the masses.As you can see except for m2, all other values are the same.
If mass is bigger the force grows.
2. D.
Again check the formula. The bigger distance, the smaller force. So, closer = bigger force.
3.C It will increase.Ohm's law:
Where:
I is the current.
V is voltage
R is the resistance.
In order for current to remain the same, while voltage increases, the resistance has to increase accordingly.
Explanation:
Total displacement = 200 km
Total time taken = 2 hour...
Now...
= 100 kilometers/hour south
The time of flight depends only on the initial velocity and the initial height
Explanation:
An object is said to be in free fall if the only force acting on it is the force of gravity. If this is the case, then the motion of the object in free fall is a uniformly accelerated object, with constant acceleration towards the ground. The time of flight can be found by using the suvat equation:
where
s is the displacement (which corresponds to the initial height of the object)
u is the initial vertical velocity
is the acceleration
t is the time of flight
Therefore, from the equation, we see that the time of flight depends only on two factors:
- s, the initial height of the object
- u, its initial velocity
In case the air resistance is not negligible, then the acceleration is no longer constant, and the time of the fall also depends on other factors such as the mass of the object and its shape, which affects the magnitude of the air resistance acting on the body.
Learn more about free fall:
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