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GalinKa [24]
2 years ago
13

A roller coaster car is released from rest as shown in the image below. If

Physics
1 answer:
mrs_skeptik [129]2 years ago
4 0

Answer:

40m/s

Explanation:

a=g

u=0

s=81

v²=u²+2as

v²=2(9.81)(81)

v=√1587.6=39.8446985181≈40m/s

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Imagine a place in the cosmos far from all gravitational and frictional influences. Suppose that you visit that place (just supp
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The rock will continue to travel in a straight line with a constant velocity for ever... The reason is, once it leaves your hand there is no force acting on the rock, so it will just continue to move in a natural motion which is constant velocity.
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3 years ago
If Sherry took her pulse for 6 seconds and felt 14 beats, What would her heart rate be?
Tom [10]

Answer:

140 beats per minute

Explanation:

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2 years ago
Show all your work clearly on the scratch paper) Two in-phase loudspeakers that emit sound with the same frequency are placed al
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Answer:

Explanation:

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8 0
3 years ago
Isotopes of hydrogen react, forming the element helium, as shown.
forsale [732]

Answer:

B. nuclear fusion

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As in the case of isotopes of hydrogen fuses to form helium, the nuclear reaction is given by relation

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Why is it important for earth’s magnetic field that the inner core is hotter then the outer core?
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A. The inner core heat produce stuff

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