In which of the following examples does the object have both kinetic and potential energy? Select all that apply.
2 answers:
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Answer: attractive
Explanation:
According to Newton's law of Gravitation, the gravitational force exerted between two bodies of masses
and
and separated by a distance
is equal to the product of their masses and inversely proportional to the square of the distance:
Where:
is the Gravitational Constant
and
are the masses of the objects
is the distance between the objects
It should be noted: this force is a central force and is attractive.
<h2>a) Equivalent resistance is 143 Ω</h2><h2>b) Potential difference is 71.5 V</h2>
Explanation:
When resistors are connected in series, effective resistance is given by
Here
R₁ = 21Ω
R₂ = 58Ω
R₃ = 64Ω
a)
Equivalent resistance is 143 Ω
b) We know
Potential difference = Current x Resistance
V = IR
I = 0.5 A
R = 143Ω
Substituting
V = 0.5 x 143 = 71.5 V
Potential difference is 71.5 V