What do you expect the enclosed current is for a bar magnet?

1 answer:

6 0

The point P lies at a linear distance 1 m from the corner. Magnetic field due to current in wire Magnetic field due to current in wire. Applying Right hand thumb rule, the magnetic field at P is perpendicular to xy plane and into the plane of drawing (i.e. negative z-direction).

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How much work is done when an engine generates 400 Watts of power in 25 seconds?

IceJOKER [234]

Answer:

10000 J or 10 KJ

Explanation:

power = workdone/time taken

400 = workdone/25

workdone = 400 * 25

=10000 J

8 0

3 years ago

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Why is it important to know the direction of the force applied to a moving object and the direction in which the object is movin

ELEN [110]

C is correct. The work-force relation is given by W=F·d, where F is force vector, and d is the displacement vector. The dot is the dot product, which is a measure of how parallel the two vectors are. It can be restated as the product of two vector magnitudes times the cosine of the angle between them. Therefore work is a scalar, not a vector, since the dot product returns a scalar.
$W=Fdcos(\theta)$

3 0

3 years ago

15 points for 2 questions

Elden [556K]

I believe the answer would be c because i think that you multiply the 2

8 0

3 years ago

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The advantages and disadvantages of using copper, steel and aluminium in electrical cables.

katrin [286]

Advantages of copper cables are that copper is an extremely powerful conductor of electricity and much more stable over time. It can withstand higher temperatures than aluminum and is more resistant to damage. Disadvantages: Copper is more expensive and heavier and thus requires structural support. Advantages of aluminum cables are that it is less expensive, easier to work with and light weight and so does not need structural support when strung over long distance. Disadvantages: Aluminum is more susceptible to corrosion and requires periodic replacement. It needs much greater maintenance. Advantages of steel cables are that steel does not rust, is fairly cheap and readily available. It has a higher tensile strength too. Disadvantages: Steel cables are less ductile and are therefore more susceptible to fatigue.

6 0

3 years ago

The turntable in a microwave oven has a moment of inertia of 0.039 kg⋅m2 and is rotating once every 4.4 s . Part A What is its k

gayaneshka [121]

To solve this problem it is necessary to apply the concepts related to Kinetic Energy, specifically, since it is a body with angular movement, the kinetic rotational energy. Recall that kinetic energy is defined as the work necessary to accelerate a body of a given mass from rest to the indicated speed.

Mathematically it can be expressed as,

$KE = \frac{1}{2} I\omega^2$