A circuit with two or more branches for current to flow

1 answer:

4 0

If there's any point in a circuit where the current has a choice
of which branch to take, then you have a <em>parallel circuit</em>.

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How does using a ramp to load boxes into a truck make work easier?

larisa [96]

"Using the ramp decreases the amount of force needed to move the boxes, but the boxes must be moved over a longer distance" is the way among the following choices given in the question that a ramp <span>to load boxes into a truck make work easier. The correct option among all the options that are given in the question is option "D".</span>

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3 years ago

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An airplane traveling at half the speed of sound emits a sound of frequency 4.68 kHz. (a) At what frequency does a stationary li

kkurt [141]

Answer:

(a) 9.36 kHz

(b) 3.12 kHz

Explanation:

(a)

V = speed of sound

$v$ = speed of airplane = (0.5) V

f = actual frequency of sound emitted by airplane = 4.68 kHz = 4680 Hz

f' = Frequency heard by the stationary listener

Using Doppler's effect

$f' = \frac{Vf}{V-v}$

$f' = \frac{V(4680)}{V-(0.5)V)}$

f' = 9360 Hz

f' = 9.36 kHz

(b)

V = speed of sound

$v$ = speed of airplane = (0.5) V

f = actual frequency of sound emitted by airplane = 4.68 kHz = 4680 Hz

f' = Frequency heard by the stationary listener

Using Doppler's effect

$f' = \frac{Vf}{V+v}$

$f' = \frac{V(4680)}{V+(0.5)V)}$

f' = 3120 Hz

f' = 3.12 kHz

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3 years ago

Because scientists cannot actually precisely measure a process like soil erosion over the entire planet, they must _____.

Pani-rosa [81]

Your answer is C. I hope this helps you.

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3 years ago

Suppose you are walking in an airliner in-flight use newtons third law to describe the effect of your work on the motion on the

Gwar [14]

According to Newton's 3rd law, for every force applied, there's an equal and opposite force that will occur. So when you are walking , you are pushed forward but the plain is "pushed back" from the force

Explanation:

A force is a push or a pull that acts upon an object as a results of its interaction with another object. Forces result from interactions.
The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object. The direction of the force on the first object is opposite to the direction of the force on the second object. Forces always come in pairs - equal and opposite action-reaction force pairs.
According to Newton, whenever objects A and B interact with each other, they exert forces upon each other.
A variety of action-reaction force pairs are evident in nature.