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2 years ago

6

A boy holds a toy soldier in from of a concave mirror. The focal length of the mirror is 0.45 m and the boy holds the toy soldie

r at a distance of 0.25m from the mirror. Find the image distance.

1 answer:

Elena-2011 [213]2 years ago

5 0

Daddy is coming back to me lol

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it would be at either A or B.

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at room temperature, iron is a solid and mercury is a liquid. based on this information we can infer thata. iron has a higher bo

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A. iron has a higher boiling point thanmercury.

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3 years ago

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A square piece of tin has 12 inches on a side. An open box is formed by cutting out equal square pieces at the corners and bendi

Citrus2011 [14]

Answer:

Explanation:

Given a square Piece whose side is 12 inches

Now square pieces are cut from each corner to make it a open box

Suppose x is the length of square piece at each corner

then

base square has a length of $12-2x$

Dimension of new box is $(12-2x)\times (12-2x)\times x$

Volume $V=(12-2x)\times (12-2x)\times x$

$V=\left ( 12-2x\right )^2\cdot x$

For maximum volume differentiate with respect to x we get

$\Rightarrow\frac{\mathrm{d} V}{\mathrm{d} x}=2\times \left ( 12-2x\right )\times \left ( -2\right )\cdot x+\left ( 12-2x\right )^2=0$

we get x=6 and 4 but at x=6 volume becomes zero therefore x=4 is valid

$V=\left ( 12-2\cdot 4\right )^2\cdot 4$

$V=4^3$

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2 years ago

this event is the result of a sudden vertical offset in the ocean floor and is most often the result of plate movement on the oc

MissTica

Answer: Tsunami.

Explanation :

Tsunami is the result of a sudden vertical offset in the ocean floor and is most often the result of plate movement on the ocean floor.

Tsunami is caused due to the displacement of a large volume of water like in an ocean. It consists of a series of waves. It destroys coastlines and coastal settlements. It is also known as a tidal wave.

So, the correct option is (b) Tsunami.

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2 years ago

What is the magnitude of the force a charge 25uc exerts on a charge 3mc 35 cm away?

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5.51 × 10 power 12 newton is answer

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2 years ago