3 years ago

All living and nonliving material is composed of (1) air (3) water (2) elements (4) soil

Physics

2 answers:

Elan Coil [88]3 years ago

5 0

Elements is the answer to this question

vagabundo [1.1K]3 years ago

5 0

Elements is the answer

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A ball is throw into the sky at 18m/s. How high can it reach?

Komok [63]

Answer:

The maximum height of the ball will be "16.53 m".

Explanation:

Given that,

$V_{final} = 18 \ m/s$

As we know,

The initial as well the final height on the ball will be same after it reaches it's maximum height.

then,

⇒ $V_{final}=V_{initial}$

where, $V_{initial} = \sqrt{2gh}$

$=\sqrt{2\times 9.8\times h}$

$=\sqrt{19.6h}$

hence,

The max height of the ball will be:

⇒ $18=\sqrt{19.6h}$

$19.6h=324$

$h=\frac{324}{19.6}$

$=16.53 \ m$

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3 years ago

If a person walks forwards five meters but then moves back one meter,

pogonyaev

The answer is 4 :0 :0

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3 years ago

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I need question 5 please and correct any others if they’re wrong

Kryger [21]

The resistance would increase.

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A homeowner is trying to move a stubborn rock from his yard. By using a a metal rod as a lever arm and a fulcrum (or pivot point

pogonyaev

Answer:

L = 1.545 m

Explanation:

Let the total length of the rod is L

now the torque must applied on the other end of the rod so that it will balance the torque due to weight of rock on other side of fulcrum

so we will have

$mg \times d = F(L - d)$

so we have

$325\times 9.8 \times 0.266 = F(L - 0.266)$

F = 663 N

$848 = 663(L - 0.266)$

$L = 1.545 m$

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3 years ago

Which describes a relationship when calculating the energy of a photon? The energy of the photon is directly proportional to fre

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Answer:

The energy of a photon is directly proportional to it's frequency

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