4 years ago

What is the focal length of a lens

Physics

1 answer:

goldenfox [79]4 years ago

4 0

Answer:

The focal length of a lens is refers to the distance from the center of the lens to the principal foci.

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Bernoulli's principle is responsible for most of the lift produced by an airplane wing.

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Answer:

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3 years ago

On the way to school, Jed traveled 100m north, 300m east, 100 north, 100m east, and 100m north. A.) Find the total distance trav

Oduvanchick [21]

Answer:

Total distance = 700 m

Displacement = 500 m

Explanation:

Notice that Jed travelled a total of 3 x 100 m = 300 m in the North direction, and 300 m + 100 m = 400 m in the East direction. Therefore the total distance he travelled is: 300 + 400 = 700 m.

But the actual displacement is given by the Pythagorean theorem as the hypotenuse of a right angle triangle of legs 300 m and 400 m:

displacement = $\sqrt{300^2+400^2} =\sqrt{250000} =500\,m$

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3 years ago

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Explanation:

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3 years ago

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3 years ago

A current of 0.2 A flows through a conductor for 5minutes. How much charge would have passed through the conductor?

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As we know,

$electric \: \: current = \dfrac{charge}{time}$

so, let's solve for charge (q) :

time = 5 minutes = 5 × 60 seconds = 300 seconds.

$0.2 = \dfrac{q}{300}$

$q = 300 \times 0.2$

$q = 60$

hence, the charge = 60 coulombs (C)

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3 years ago