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skelet666 [1.2K]
3 years ago
11

Can someone help me asap this is due at 2 50

Physics
1 answer:
Rom4ik [11]3 years ago
8 0
The data is inadequate
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Wall-E the robot is resting when he randomly explodes into two pieces that fly off in opposite directions. His head has a mass o
Brut [27]

Answer:

<em>The body flies off to the left at 9.1 m/s</em>

Explanation:

<u>Law Of Conservation Of Linear Momentum </u>

It states the total momentum of a system of bodies is conserved unless an external force is applied to it. The formula for the momentum of a body with mass m and speed v is  

P=mv.  

If we have a system of bodies, then the total momentum is the sum of the individual momentums:

P=m_1v_1+m_2v_2+...+m_nv_n

If a collision occurs and the velocities change to v', the final momentum is:

P'=m_1v'_1+m_2v'_2+...+m_nv'_n

Since the total momentum is conserved, then:

P = P'

In a system of two masses, the equation simplifies to:

m_1v_1+m_2v_2=m_1v'_1+m_2v'_2\qquad\qquad[1]

Wall-E robot is initially at rest, its two parts together. His head has a mass of m1=0.75 kg and his body has a mass of m2=6.2 kg. Both parts have initial speeds of zero v1=v2=0.

After the explosion, his head flies off to the right at v1'=75 m/s. We are required to find the speed of his body v2'. Solving [1] for v2':

\displaystyle v'_2=\frac{m_1v_1+m_2v_2-m_1v'_1}{m_2}

Substituting values:

\displaystyle v'_2=\frac{0.75*0+6.2*0-0.75*75}{6.2}

\displaystyle v'_2=-9.1 \ m/s

The body flies off to the left at 9.1 m/s

3 0
3 years ago
Arm circles are an effective dynamic stretch for swimmers because they raise blood pressure and improve muscle stamina lower bod
dybincka [34]

Answer : Option C) copy the movements performed during the activity.

Explanation : Arm circles are an effective dynamic stretch for swimmers because they copy the movements performed during the activity.

During swimming when the arm circles are performed it stretches the triceps brachii, loosens the shoulder blade and stretches the side muscles.

Often many people are observed to perform this arm circles stretch without bringing the elbow behind the head, but especially for swimmers, this increases the stretching length and reduces stress while swimming.

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3 years ago
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Martin perceived that there was music playing. Martin
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B was very surprised by the music
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2 years ago
Help Me please!!!!!!!!!!!!!!!!!!!!! This My question on this test! I need This one! PLEASE!!!!!!!!
faltersainse [42]

Answer:

That is gold

Explanation:

3 0
3 years ago
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When a hypothesis is wrong, scientists often begin by revising the (blank)
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I might be wrong, but. The words seem to fit. 

When a hypothesis is wrong, scientists often begin by revising the question after that, its common for scientists to redesign the experiment.
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