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IRINA_888 [86]
3 years ago
6

How do different lense types connect to helping locate sharks through mechanical radio waves?​

Physics
1 answer:
Gnom [1K]3 years ago
5 0

Answer:

I am not quite sure, but maybe you can find something from these websites

The second one to me is the best. Sorry if it wasn't what you needed. :(

Explanation:

https://phys.org/news/2012-11-metamaterial-lens-focuses-radio-device.html

https://animals.howstuffworks.com/fish/sharks/shark-yummy-hum1.htm

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Refer to the image shown to answer the question.
Lostsunrise [7]
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3 years ago
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A man takes 20 seconds to climb 5m up a ladder. He weighs 720N. Calculate the power he must deliver to do this.
Inessa05 [86]

Answer:

180 W

Explanation:

The work done by the man against gravity is equal to its gain in gravitational potential energy:

W=mg\Delta h

where

(mg) = 720 N is the weight of the man

\Delta h= 5 m is the change in height

Substituting,

W=(720)(5)=3600 J

The power he must deliver is given by

P=\frac{W}{t}

where

W = 3600 J

t = 20 s is the time taken

Substituting,

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3 years ago
A ball is thrown into the air with a vertical velocity of 50 m/s and a horizontal
daser333 [38]

\mathfrak{\huge{\pink{\underline{\underline{AnSwEr:-}}}}}

Actually Welcome to the Concept of the Projectile Motion.

Since, here given that, vertical velocity= 50m/s

we know that u*sin(theta) = vertical velocity

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T = Usin(theta) ÷ g, here g = 9.8 m/s^2

so we get as,

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Please help I’m stuck
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The weight of the box is <em>w</em> = <em>mg</em>, where <em>m</em> is the mass. So

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Then the box has density

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8 0
2 years ago
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