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4 years ago

When a simple magnifying glass is used properly, the image will be formed

1 answer:

6 0

Well, the key here is: What do you mean by "properly" ?
I'll assume that you mean using a simple magnifying glass
to magnify things, not to burn ants or ignite newspaper.

When a magnifying glass is used to magnify ... for example,
to inspect the markings on a dime, or to read the fine print
in an insurance policy ... no image is formed. That is, no real
image. It's called a 'virtual image'. It's erect, and it's on the same
side of the glass as the object being examined.

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A child is riding a merry-go-round that has an instantaneous angular speed of 1.25 rad/s and an angular acceleration of 0.745 ra

skelet666 [1.2K]

Answer:

So the acceleration of the child will be $8.05m/sec^2$

Explanation:

We have given angular speed of the child $\omega =1.25rad/sec$

Radius r = 4.65 m

Angular acceleration $\alpha =0.745rad/sec^2$

We know that linear velocity is given by $v=\omega r=1.25\times 4.65=5.815m/sec$

We know that radial acceleration is given by $a=\frac{v^2}{r}=\frac{5.815^2}{4.65}=7.2718m/sec^2$

Tangential acceleration is given by

$a_t=\alpha r=0.745\times 4.65=3.464m/sec^$

So total acceleration will be $a=\sqrt{7.2718^2+3.464^2}=8.05m/sec^2$

7 0

3 years ago

Frequency refers to the number of wavelengths that pass a fixed point in a minute. true or false

Art [367]

Frequency refers to the number of wavelengths that pass a fixed point in a minute. true or false

Answer:True

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3 years ago

The number ocean waves that pass a buoy in one second is _ of the wave

mr_godi [17]

The number of ocean waves that pass a buoy in one second is the frequency of the <span>wave. The crest of a transverse wave is its highest point. </span>

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3 years ago

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For each property listed, identify the type of element it describes. Very good electrical conductivity: Amphoteric, able to form

kow [346]

The elements that is very good in electrical conductivity are gold and copper: elements that is amphoteric are copper, zinc, tin, lead, aluminum and beryllium: elements that is gaseous at room temperature are hydrogen, nitrogen, oxygen, fluorine and chlorine: elements that is solid at room temperature are all metal except mercury and perhaps some unseen radioactive elements. Lastly, elements that is brittle are hydrogen, carbon, nitrogen, oxygen, phosphorus, sulfur and selenium

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3 years ago

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Which of the following is true about good running form?

Olin [163]

Answer:

It can decrease your risk of injury

Explanation:

Running well can make sure you don't get hurt.

:))

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3 years ago

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