Answer:
The temperature would fall.
Explanation:
The question can be solved by using first law of thermodynamics.
The law states:
The change in internal energy of the system is equal to the heat energy supplied to the system minus the workdone by the system.
ΔU = Q - W
where ΔU is change in internal energy of the system
Q is energy given to the system
W is workdone by the system
Because the charges are repelling each other it means they will move away from each other and their repulsive forces will do positive workdone (workdone is defined as distance moved in the direction of the force applied). Therefore W > 0.
There is no energy supplied to the system so Q = 0.
Using the relation ΔU = Q - W we can see that if Q = 0 and W > 0 then ΔU < 0. Hence internal energy of the system falls so the temperature falls.
impulse = F × t
The greater the impulse exerted on something, the greater will be the change in momentum.
impulse = change in momentum
Ft = ∆(mv)
D. MgF₂
Explanation:
The compound that is held together by the electrostatic force between two ions is MgF₂.
Electrostatic force of attraction is exhibited primarily and only in ionic compounds.
In this type of bond;
- A metallic atom such as Mg will lose two of its valence electrons to form Mg²⁺
- Two non-metal ion that is highly electronegative such as "F" will gain the two electrons because they require an electron each to have a perfect octet.
- Two ions are now formed.
- In the vicinity of one another, they attract with an electrostatic force.
- This is why our answer is MgF₂.
- Electrostatic force occurs in ionic/electrovalent compounds
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Ionic bond brainly.com/question/10826758
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Immediately after the switch is closed, the capacitor acts like a short circuit for a very small time. We can calculate the currents through each resistor by first calculating the total resistance:
Req = 1/(1/3+1/6) + 8 = 1/(3/6) + 8 = 2 + 8 = 10 ohms.
IR1 = E / Req = 42 / 10 = 4.2 A.
VR2 = VR3 = E * R23 / Req = 42 * 2 / 10 = 8.4 V
IR2 = VR2 / R2 = 8.4 / 6 = 1.4 A.
IR3 = VR3 / R3 = 8.4 / 3 = 2.8 A.
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Answer:
D. It can be Cyclic
Explanation:
Science has all different kinds of alike processes.
The scientific method is a generally and usually a Cyclical Process.