The potential difference,electric current ,resistance and new electric current will be 12 V,4 A,3 Ω,2 A.
<h3>What is resistance?</h3>
Resistance is a type of opposition force due to which the flow of current is reduced in the material or wire. Resistance is the enemy of the flow of current.
The energy in terms of the charge and potential difference is;
E= qV
60=5 C × V
V= 12 V
The electric current is found as;

From the ohm's law;
V=IR
12=4 ×R
R=3Ω
If the voltage is constant and the resistance is doubled, then the new electric current is half of the previous condition;

Hence, the potential difference,electric current ,resistance and new electric current will be 12 V,4 A,3 Ω,2 A.
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Answer/
I have no idea i’m so sorry
Explanation/
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Answer:
sorry I don't know I am too bad a t this coz I am only at class 7
Answer:
58.9 N
Explanation:
The wood is buoyed up by the mass of the water is displaces
wood volume = .030 m^3 = 30 000 cm^3
mass of water displaced = 30 000 g = 30 kg
wood mass = 800 kg/m^3 * .030 m^3 = 24 kg
so tension in string = mg = ( 30 kg - 24 kg) * 9.81 m/s^2 = 58.9 N
Answer:

Explanation:
Diameter 
Temperature 
Rate of supply 
Emissivity of base surface 
Temperature at base 
Generally the equation for Area of base surface is mathematically given by



Generally the equation for Area of Hemispherical dome is mathematically given by



Since base is a flat surface


Therefore


Generally the equation for Net rate of radiation heat transfer between two surfaces is mathematically given by


Where

Therefore


Therefore the emissivity of the dome is