The muscular system<span> is an </span>organ system<span> composed of </span>skeletal<span>, </span>smooth<span> and </span>cardiac muscles<span>. This system allows movement of the body, maintains posture, and circulates blood throughout the body.
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>Muscles<span> continually align themselves vertically to </span>help maintain posture.
Answer:
I) 420000J
ii)
Explanation:
(I) so you can use the formula for quantity of heat then substitute the values given
formula-Q=mc∆9
Weight equals mass times gravitational acceleration=400N, so mass=400/9.8=41kg approx.
