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3 years ago

A comparison of a machine’s work output with its work input is called ??.

Physics

1 answer:

Aloiza [94]3 years ago

7 0

Ohhhhh its called a input machine

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Which statement about dwarf planets is true?

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3 years ago

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If the distance between the Earth and Moon were half what it is now, by what factor would the force of gravity between them be c

hichkok12 [17]

Answer:

Explanation:

G = Gravitational constant = 6.67 × 10⁻¹¹ m³/kgs²

$m_1$ = Mass of Earth

$m_2$ = Mass of Moon

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$F_o=\dfrac{Gm_1m_2}{r^2}$

New gravitational force

$F_n=\dfrac{Gm_1m_2}{(\dfrac{1}{2}r)^2}$

Dividing the equations

$\dfrac{F_n}{F_o}=\dfrac{\dfrac{Gm_1m_2}{(\dfrac{1}{2}r)^2}}{\dfrac{Gm_1m_2}{r^2}}\\\Rightarrow \dfrac{F_n}{F_o}=\dfrac{\dfrac{Gm_1m_2}{\dfrac{1}{4}r^2}}{\dfrac{Gm_1m_2}{r^2}}\\\Rightarrow \dfrac{F_n}{F_o}=4$

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3 years ago

The rate at which an object’s velocity changes is called its

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3 years ago

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In a two-source circuit, one source acting alone produces 10 ma through a given branch. the other source acting alone produces 8

pashok25 [27]

Refer to the figure below.
R = resistance.

Case 1:
The voltage source is V₁ and the current is 10 mA. Therefore
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Case 2:
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V₂ = (8 mA)R

Case 3:
The voltage across the resistance is V₁ - V₂. Therefore the current I is given by
V₁ - V₂ = IR
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2 = I
The current is 2 mA.

Answer: 2 mA

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3 years ago

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dlinn [17]

Answer:

Explanation:

If you straighten out the line, it touches the 5, which makes the length 5

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3 years ago

A comparison of a machine’s work output with its work input is called __??__.

A comparison of a machine’s work output with its work input is called ??.