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2 years ago

Which simple machine is NOT correctly matched with an appropriate task for its use?

1 answer:

6 0

The simple machine that is not correctly matched with its appropriate task is the inclined plane because there is no such big ramp that is as high as 1 storey building, the appropriate task would be Lifting a heavy box and moving it across a room. and for the pulley : <span>Moving a heavy box up to the second floor of a building.</span>

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A basic statement established by experiment or observation.

Tems11 [23]

Answer:

c.Law

Explanation:

i think you must learn and write however good luck

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2 years ago

Read 2 more answers

What does the term calorie refer to

OLga [1]

Hey there,
<span>It means- the amount of energy required to raise the temperature of a liter of water one degree centigrade at sea level
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Hope this helps :))

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3 years ago

A 40 kg person sits on top of a 400 kg rock. What is the person’s weight? 390 N

algol13

The weight of the person is given by:

W = mg

W = weight, m = mass, g = gravitational acceleration

Given values:

m = 40kg, g = 9.81m/s²

Plug in and solve for W:

W = 40(9.81)

W = 390N

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2 years ago

During a football game, a receiver has just caught a pass and is standing still. Before he can move, a tackler, running at a vel

zmey [24]

Answer:

Mass of receiver is 92 kg

Explanation:

We have given mass of tackler $m_1=100kg$

Let the mass of receiver is $m_2kg$

When tackler moving alone velocity is $v_i=4.8$ m/sec

And when tackler and receiver is together velocity is $v_f$ = 2.5 m/sec

So from conservation of momentum

$m_1v_i=(m_1+m_2)v_f$

$100\times 4.8=(100+m_2)\times 2.5$

$2.5m_2+250=480$

$2.5m_2=230$

$m_2=92kg$

So mass of receiver is 92 kg

4 0

2 years ago

8. What is the frequency of the standing wave shown?

densk [106]

Answer:

while using brainly app. there is an option of uploading image of diagram, graph or plot. plz use that feature to upload image of the standing wave so that your question can be properly answeres

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2 years ago