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Marysya12 [62]
3 years ago
8

Jack an investigator wants to prove that a certain suspect was present at the crime scene when the crime was committed. What kin

d of evidence should he look for
Chemistry
1 answer:
grin007 [14]3 years ago
5 0

Answer:

eye witnesses, dna, fingerprints, hair, time stamped photos/ videos

Explanation:

:)

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A 13-gram rubber stopper is attached to a 0.93-meter
makkiz [27]
<h3>Answer:</h3>

The centripetal acceleration is 26.38 m/s²

<h3>Explanation:</h3>

We are given;

  • Mass of rubber stopper = 13 g
  • Length of the string(radius) = 0.93 m
  • Time for one revolution = 1.18 seconds

We are required to calculate the centripetal acceleration.

To get the centripetal acceleration is given by the formula;

Centripetal acc = V²/r

Where, V is the velocity and r is the radius.

Since time for 1 revolution is 1.18 seconds,

Then, V = 2πr/t, taking π to be 3.142 ( 1 revolution = 2πr)

Therefore;

Velocity = (2 × 3.142 × 0.93 m) ÷ 1.18 sec

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Thus;

Centripetal acceleration = (4.953 m/s)² ÷ 0.93 m

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Hence, the centripetal acceleration is 26.38 m/s²

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What is the attraction between molecules within a substance called? adhesion capillary action cohesion polarity.
cestrela7 [59]

Answer:

cohesion

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just got it right

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