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3 years ago

9

A phase change is an example of a (option 1) Nuclear Change (option 2) Physical change (option 3) chemical change (option 4) cov

alent change

2 answers:

masha68 [24]3 years ago

6 0

<span>A phase change is an example of a
Physial change</span>

Sedbober [7]3 years ago

6 0

B.) <span>A phase change is an example of a "Physical Change"

Hope this helps!</span>

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A(n) 83 kg fisherman jumps from a dock into a 139 kg rowboat at rest on the West side of the dock. If the velocity of the fisher

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here we can say that there is no external force on fisherman and dock

so here we will use momentum conservation theory

As per momentum conservation

initial momentum of fisherman + boat = final momentum of fisherman + boat

$m_1v_{1i} + m_2v_{2i} = m_1v_{1f} + m_2v_{2f}$

now we will have

$83(3.1) + 139(0) = 83 v + 139 v$

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$v = 1.16 m/s$

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You push on a cart (18.0kg) at a 30 degree below horizontal angle. The coefficient of kinetic friction between the chair and the

podryga [215]

Given that force is applied at an angle of 30 degree below the horizontal

So let say force applied if F

now its two components are given as

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Now the normal force on the block is given as

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now the friction force on the cart is given as

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so now we have

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The answer is 24 (for the first question).

Explanation:

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