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2 years ago

A wire is carrying current vertically downward. What is the direction of the force due to Earth's magnetic field on the wire?

Physics

1 answer:

AnnyKZ [126]2 years ago

6 0

Answer:

The direction of the force will be towards the east

Explanation:

From the question we are told that

The direction of the downward

Generally according to Fleming's right-hand rule(

Thumb - direction of force

Middle finger - direction of current

Index finger - direction of the magnetic field

) and the fact that the earth magnetic field acts from south to north with respect to the four cardinal points then the direction of the force will be toward the east with respect to the four cardinal point on the earth

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A spring is compressed 0.035 m inside a dart gun. (K=500 N/m). The spring has elastic energy. Calculate it.

NARA [144]

The elastic potential energy of the spring is 0.31 J

Explanation:

The elastic potential energy of a spring is given by

$E=\frac{1}{2}kx^2$

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For the spring in this problem, we have:

k = 500 N/m (spring constant)

x = 0.035 m (compression)

Substituting, we find the elastic potential energy:

$E=\frac{1}{2}(500)(0.035)^2=0.31 J$

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A river flows due east at 12 km/h. A boat crosses the 720 m wide river by maintaining a constant velocity of 72 mi/h due north r

zhenek [66]

Answer:

The boat will be 74 .17 meters downstream by the time it reaches the shore.

Explanation:

Consider the vector diagrams for velocity and distance shown below.

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$tan \theta = \frac{12}{115.873}$

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This is the vector angle with which the ship drifts away with respect to its northward direction.

From the sketch of the displacement vectors, we can use trigonometric ratios to determine the distance the boat moves downstream.

Let x be the distance the boat moves downstream.d

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$x= 720\times 5.9126$

$x=74.17m$

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