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3 years ago

7

An electric current always produces a magnetic field that is ______ to the field. A. perpendicular B. parallel C. at a 37° angle

D. none of the above

1 answer:

Aleks04 [339]3 years ago

8 0

Answer:perpendicular

Explanation:

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In an elastic collision, two objects collide and return to their original positions with no loss of _________.

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No loss of kinetic energy! :)

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4 years ago

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Ivanshal [37]

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3 years ago

Heat is transferred from molecules with more kinetic energy to molecules with _________kinetic energy.

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low

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3 years ago

Object height 10cm is placed in front of plane mirror.The height of the image will be_______?

coldgirl [10]

Object height 10cm is placed in front of plane mirror. The height of the image will also be 10cm as the height of image is same as height of object in the case of plane mirror

7 0

3 years ago

oksian1 [2.3K]

Answer:

The image distance is 17.56 cm

Explanation:

We have,

Height of light bulb is 3 cm.

The light bulb is placed at a distance of 50 cm. It means object distance is, u =-50 cm

Focal length of the lens, f = +13 cm

Let v is distance between image and the lens. Using lens formula :

$\dfrac{1}{f}=\dfrac{1}{v}-\dfrac{1}{u}\\\\\dfrac{1}{v}=\dfrac{1}{f}+\dfrac{1}{u}\\\\\dfrac{1}{v}=\dfrac{1}{13}+\dfrac{1}{(-50)}\\\\v=17.56\ cm$

So, the image distance is 17.56 cm.

5 0

3 years ago