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Mandarinka [93]
3 years ago
8

An object accelerates at 20 m/s2. By how much does the speed change in one

Physics
1 answer:
Thepotemich [5.8K]3 years ago
6 0

Answer:

A

Explanation:

2 seconds= 20m

20m/2=

10m

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As you move down a column :
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4 0
4 years ago
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2-The amount of internal energy needed to raise the temperature of 0.25kg of water by 0.2°C is 209.3 J. How fast must a 0.25 kg
Yakvenalex [24]

Answer:

40.92 m/s

Explanation:

The computation is shown below:

Ek = 1 ÷2mv²...............................(1)

v = √(2Ek/m).......................... (2)

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m denotes mass

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7 0
3 years ago
Plan an experiment to measure the ideal mechanical advantage of a three-hole punch. (a) What materials would you need? (b) What
Vaselesa [24]

Answer:

A) Three hole punch and either a layered plastic or paper

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Explanation:

<u>a) Materials involved includes :</u>

Three hole punch and either a layered plastic or paper

Identify the forces acting on the three-hole punch which are Input and output forces

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<u>B) procedures involved </u>

The mechanical advantage = output force / input force

step one:  Identify the lengths involved

assuming no friction or relatively small friction \

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So 400n up - 600n down
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5 0
3 years ago
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