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3 years ago

Please answer this question

Physics

1 answer:

Musya8 [376]3 years ago

5 0

Answer:

<em>11.a) </em><em>Car B </em><em>is faster than </em><em>Car A</em><em>. This is because Car B covers more distance in less time, whereas Car A covers less distance in more time. Now, as we know that distance is directly proportional and time is inversely proportional to speed. In Car B, a larger distance and less time and a smaller distance and more time in Car A, indicates that the speed of Car B is more than the speed of Car A.</em>

<em>b) </em><em>Car B</em><em> accelerates faster than </em><em>Car A. </em><em>We know that, the acceleration is directly proportional to the change in linear velocity and inversely proportional to time taken. Here, The overall journey of </em><em>Car B </em><em>is short, whereas for </em><em>Car A, </em><em>it's longer. Also, as previously mentioned that the final speeds of Car B is more than Car A [remembering that both Cars start from the origin(rest)]. Hence, the change of velocity in Car B is more than Car A. Hence so.</em>

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3 years ago

A single conducting loop of wire has an area of 7.26E-2 m2 and a resistance of 117 Ω. Perpendicular to the plane of the loop is

cricket20 [7]

Answer:

$\frac{dB}{dt}$ = 591.45 T/s

Explanation:

i = induced current in the loop = 0.367 A

R = Resistance of the loop = 117 Ω

E = Induced voltage

Induced voltage is given as

E = i R

E = (0.367) (117)

E = 42.939 volts

$\frac{dB}{dt}$ = rate of change of magnetic field

A = area of loop = 7.26 x 10⁻² m²

Induced emf is given as

$E = A\frac{dB}{dt}$

$42.939 = (7.26\times 10^{-2})\frac{dB}{dt}$

$\frac{dB}{dt}$ = 591.45 T/s

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Answer:

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The materials that are conductors are Metal doorknob, Silver, Gold, Copper, Metal coat hanger, Paper clip, while insulators are Carpet, Wood, Rubber, Bulletin board, Clothing, Plastic.

<h3>What are electric conductors?</h3>

Conductors are materials that allow electric current to pass through them.

<h3>What are Insulators?</h3>

Insulators are materials that do not allow electric current to pass through them.

<h3>Examples of conductors</h3>

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<h3>Examples of insulators</h3>

Carpet
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Bulletin board
Clothing
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Learn more about conductors and insulators here: brainly.com/question/492289

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2 years ago

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