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For a brass alloy, the stress at which plastic deformation begins is 345 MPa (50,000 psi), and the modulus of elasticity is . (a) What is the maximum load that can be applied to a specimen with a cross-sectional area of without plastic deformation? (b) If the original specimen length is 76 mm (3.0 in.), what is the maximum length to which it can be stretched without causing plastic deformation?
Your heart beats about 72 times per minute. At that rate how many times will it beat in one hour? (Write an equation and solve the problem.)
Write an equation to determine the number of heart beats in one hour. Let be the number of heart beats. Remember there are 60 minutes in one hour.
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