3 years ago

What is 8 m/s - 3 m/s?

Physics

1 answer:

Dima020 [189]3 years ago

3 0

5m/s 8-3 is five so five

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Answer:

1,050 Joules

Explanation:

Step 1: work done in moving the box 30 meters

work done = force X distance

= 25N X 30 = 750 Joules

Step 2: calculate total internal energy

Total internal energy = work done + kinetic energy

= 750 Joules + 300 Joules

= 1,050 Joules = 1.05 KJ

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3 years ago

Anybody from India ?

Lelu [443]

Answer:

No,why you say that

Explanation:

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Sergeeva-Olga [200]

D. because the statue has a new chemical called patina. It is no longer copper.

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If I travel 300 m east, then 400 m west, what is my distance & displacement?

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Answer:100m west

Explanation:

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3 years ago

Luis and Aisha conducted an experiment. They exerted different forces on four objects. Their results are shown in the table.

lesya692 [45]

Answer:

Object 3 has greatest acceleration.

Explanation:

Objects Mass Force

1 10 kg 4 N

2 100 grams 20 N

3 10 grams 4 N

4 1 kg 20 N

Acceleration of object 1,

$a_1=\dfrac{F_1}{m_1}\\\\a_1=\dfrac{4}{10}\\\\a_1=0.4\ m/s^2$

Acceleration of object 2,

$a_2=\dfrac{F_2}{m_2}\\\\a_2=\dfrac{20}{0.1}\\\\a_2=200\ m/s^2$

Acceleration of object 3,

$a_3=\dfrac{F_3}{m_3}\\\\a_3=\dfrac{4}{0.01}\\\\a_3=400\ m/s^2$

Acceleration of object 4,

$a_4=\dfrac{F_4}{m_4}\\\\a_4=\dfrac{20}{1}\\\\a_3=20\ m/s^2$

It is clear that the acceleration of object 3 is $400\ m/s^2$ and it is greatest of all. So, the correct option is (3).

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3 years ago

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