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Ksenya-84 [330]
3 years ago
14

A heavy, 6 m long uniform plank has a mass of 30 kg. It is positioned so that 4 m is supported on the deck of a ship and 2 m sti

cks out over the water. It is held in place only by its own weight. You have a mass of 70 kg and walk the plank past the edge of the ship. How far past the edge do you get before the plank starts to tip, in m
Physics
1 answer:
Harman [31]3 years ago
8 0

Answer:

about 1 meter

Explanation:

   

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Why can you see glass and your reflection
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<span>Glass is transparent meaning light passes through it and therefore you can see through it, but some light reflects back and if the surface is very smooth as glass often is then the light reflected back can be seen as a reflected image.</span>
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When making a DNA Fingerprint, the job of the restriction enzyme is to..
pogonyaev

Answer:

A isolate the DNA From a sample of cells

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3 years ago
Does current in Helmholtz coils flow in the same or opposite direction through each coil? Explain.
zhenek [66]
To get a uniform field in the central region between the coils, current flows in the same direction in each. 
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3 years ago
If f(x)=4/x+2 and g is the inverse of f,then g'(10)=​
ch4aika [34]

Answer:

g'(10) = \frac{-1}{16}

Explanation:

Since g is the inverse of f ,

We can write

g(f(x)) = x    <em> </em><em>(Identity)</em>

Differentiating both sides of the equation we get,

g'(f(x)).f'(x) = 1

g'(10) = \frac{1}{f'(x)}    --equation[1]    Where f(x) = 10

Now, we have to find x when f(x) = 10

Thus 10 = \frac{4}{x} + 2

\frac{4}{x} = 8

x = \frac{1}{2}

Since f(x) = \frac{4}{x} + 2

f'(x) = -\frac{4}{x^{2} }

f'(\frac{1}{2})  =  -4 × 4 = -16            

Putting it in equation 1, we get:

We get g'(10) = -\frac{1}{16}

5 0
3 years ago
1) The energy held in the molecules that your lunch is composed of
Rasek [7]

Answer:

Chemical energy

Explanation:

The energy held in the foods molecules a lunch pack is composed of is chemical energy.

They occur within food substances which originates from plants and animals as giant organic molecules.

  • Since food is often derived from plants and animals.
  • Plants produce their own food by producing macromolecules from simple inorganic substances in the environment.
  • Animals takes up these food and build their own body through it.
  • Plants and animal parts constitutes organic molecules in which chemical energy is duly stored.
  • When the molecules are broken down, they released their chemical potential energy into heat energy.
4 0
3 years ago
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