Answer:
The force of gravity after you double the mass and the distance is half of the initial force: 
Explanation:
The initial force of gravity is:
where 
is the universal gravitational constant, 
is the mass of the first object, 
is the mass of the second object, and 
is the distance between the objects.
If the mass of the second object is doubled, now we have 
, and if the distance between the objects is also doubled instead of now we have 
.
So the force of gravity now is:
and we know that
so the new force of gravity is:
The force of gravity after you double the mass and the distance is half of the initial force.
Both have the same work done.
5x4 = 20
10x2=20
They are a variable that changes as a result of the changes in the manipulated variable
Answer:
The change in the charge on the positve plate when the Teflon is inserted is +2.5 nC.
Explanation:
- It can be showed that the capacitance of a parallel-plate capacitor, can be expresssed as follows:
- Where ε, is the dielectric constant of the material that fills the space between plates.
- When this space is filled with air, ε= ε₀ = 8,85*10⁻¹² F/m.
- At the same time, the capacitance of a capacitor, by definition, is as follows:
- If we insert a Teflon slab, in such a way that fills completely the gap between the plates, all other parameters being equal, if ε = 2*ε₀, this means that C₂ = 2* C₁. = 50 pF
- As V₂=V₁ (due to the capacitor remains connected to the same battery) the charge must be the double, so Q₂ = 2* Q₁ = 5 nC.
- So, the change in the charge of the positive plate is +2.5 nC.
an element can make a molecule. so technically yes.
