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3 years ago

Why does it take more force to get a resting object to move than it does to keep

Physics

1 answer:

Triss [41]3 years ago

6 0

Answer:

Objects have a natural tendency to resist change. ... Heavier objects (greater mass) resist change more than lighter objects. Example: Pushing a bicycle or a Cadillac, or stopping them once moving. The more massive the object (more inertia) the harder it is to start or stop.

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Which of newton’s laws best explains why motorists should buckle up?

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Newton's first law of motion.

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3 years ago

Which energy transformations occur when a candle burns

gayaneshka [121]

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The current through an inductor of inductance L is given by I(t) = Imax sin(ωt).

sammy [17]

Answer:

(a) $emf_L=-LI_{max}\omega cos(\omega t)$

(b) neither increasing or decreasing

Explanation:

The current through an inductor of inductance L is given by:

$I(t)=I_{max}sin(\omega t)$ (1)

(a) The induced emf is given by the following formula

$emf_L=-L\frac{dI}{dt}$ (2)

You derivative the expression (1) in the expression (2):

$emf_L=-L\frac{d}{dt}(I_{max}sin(\omega t))\\\\emf_L=-LI_{max}\omega cos(\omega t)$

(b) At t=0 the current is zero

(c) At t = 0 the emf is:

$emf_L=-\omega LI_{max}$

w, L and Imax have positive values, then the emf is negative. Hence, the induced emf is opposite to the flow of the charge carriers.

(d) read the text carefully

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3 years ago

The air sealed between two panes of glass in some windows helps to _____.

olga_2 [115]

The air sealed between two panes of glass in some windows helps to insulate and helps it to keep the warmth or coolness inside.

Hope that helps!
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4 years ago

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Uhhh about 40 miles probably so round that

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