The total power delivered by the battery if the lightbulbs are connected is V^2/9R
<h3>Power of a battery</h3>
The formula for calculating the power of a battery is expressed according to the equation;
Power = v^2/RT
where
R is the total resistance
v is the voltage or emf
If there are 3 identical lightbulbs, each having constant resistance R are in series, then;
RT = R + R + R
RT = 3R
The voltage drop across each lightbulbs will be the same for parallel connection, hence;
Power = 3(V/3)^2/(1/3R)
Power = V^2/9R
Hence the total power delivered by the battery if the lightbulbs are connected is V^2/9R
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Answer:
In physics and engineering, a resultant force is the single force and associated torque obtained by combining a system of forces and torques acting on a rigid body. The defining feature of a resultant force, or resultant force-torque, is that it has the same effect on the rigid body as the original system of forces.
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Answer:
Temperature, density
Explanation:
Physical properties of a substance are those properties that do not change the chemical composition of the substance. There are two types of physical properties namely: intensive property and extensive property.
Intensive properties are those physical properties that does not depend on the sample size of the substance involved. Examples of intensive physical properties are temperature, density, boiling point. For example, the size or amount of a substance does not determine the the TEMPERATURE or BOILING POINT of the substance.
To find the kinetic energy KE=1/2 × mass × velocity ^2
for object 1 ke= 1/2(2)(2^2)=4 J
for object 2 ke= 1/2(4)(3^2)=18J
meaning object 2 as more kinetic energy.
The answer is the second option "watt." Watt is the unit of power measured by one joule per second. Watts are a amount of electrical power and measured by the rate of energy transfer between two things.
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