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Jet001 [13]
3 years ago
6

I need help do in a hour

Physics
1 answer:
barxatty [35]3 years ago
5 0
3. a 4. C im sure
Ex: done it
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PLEASE HELP I NEED HELP PERIODTT​
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Explanation:

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Heart cells must contract simultaneously to move blood.
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Answer:

<u>A</u>

Explanation:

The heart cells must contract simultaneously to move blood.

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A baseball pitcher throws a fastball horizontally at a speed of 43.0 m/s. Ignoring air resistance, how far does the ball drop be
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Carbohydrates, fats, proteins: These organic molecules ALL have this element in common. This element can form multiple bonds, an
statuscvo [17]
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g We saw in class that in a pendulum the string does no work. We also saw that the normal force does no work on an object slidin
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Answer:

From question (a) and (b) the pendulum motion is perpendicular to the force so the normal force will do no work and the tension in the string of the pendulum will not work

       i.e Normal \ Force(N)  = mg cos \theta

And \theta = 90 so

           N = 0

c

An example will be a where a stone is attached to the end of a string and is made to move in a circular motion while keeping the other end of the string in a fixed position        

d

A dog walking along a surface which has friction, here the frictional force would acting in the direction of the motion and this would do positive work  

Explanation:

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