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3 years ago

How is the axe an example of a wedge (think about simple machines)?

Physics

1 answer:

vfiekz [6]3 years ago

5 0

Answer:

Heavier on one side lighter on the other side.

Explanation:

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Make the following conversion. 0.0097 mg = _____ g

Cloud [144]

Your answer should be 9.7 :)

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4 years ago

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Which best describes the current atomic model?

Lorico [155]

<span>A: It is not an exact representation of the atom, but is close enough to be very useful.

Hope this helps!</span>

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3 years ago

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A rock climber hangs freely from a nylon rope that is 15 m long and has a diameter of 8.3 mm. If the rope stretches 5.1 cm, what

irinina [24]

Answer:

Mass of the climber = 69.38 kg

Explanation:

Change in length

$\Delta L=\frac{PL}{AE}$

Load, P = m x 9.81 = 9.81m

Young's modulus, Y = 0.37 x 10¹⁰ N/m²

Area

$A=\frac{\pi (8.3\times 10^{-3})^2}{4}=5.41\times 10^{-5}m^2$

Length, L = 15 m

ΔL = 5.1 cm = 0.051 m

Substituting

$0.051=\frac{9.81m\times 15}{5.41\times 10^{-5}\times 0.37\times 10^{10}}\\\\m=69.38kg$

Mass of the climber = 69.38 kg

6 0

3 years ago

Electricity costs 6 cents per kilowatt hour. In one month one home uses one megawatt hour of electricity. How much will the elec

Luda [366]

Answer:

Cost of 1000 kilowatt hour = 6000 cents

Explanation:

Given that

Electricity cost is 6 cents per kilowatt hour.

And we have to found out the cost for one megawatt hour

We know that

1 kilowatt = 1000 watt

1 megawatt = = 1000000 watt

1 megawatt = 1000 kilowatt

1 megawatt hour = 1000 kilowatt hour

Given that cost of 1 kilowatt hour = 6 cents

So the cost of 1000 kilowatt hour = 6 x 1000 cents

Cost of 1000 kilowatt hour = 6000 cents

3 0

3 years ago

What is the force on a 1025 kg elevator that is falling freely at 9.8 m/sec 2?

kicyunya [14]

Answer:

<h2><u>Given </u><u>:</u><u>-</u></h2>

Mass = 1025 kg
Acceleration = 9.8 m/s²

Force

<h2><u>Solution</u><u> </u><u>:</u><u>-</u></h2>

We know that

F = mg

F = 1025 × 9.8

F = 10,045 N

Or,

10045/1000 = 10.045 Kilo Newton

$\\$

6 0

3 years ago