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The ________ prevents chyme from exiting the stomach too soon and blocks the intestinal contents from returning to the stomach

The RDAs are:

) Longtitudinal, circular and diagonal muscles are needed to facilitate contraction and expansion of the

The preferred source of energy in the body comes from where?

Which of the following represents an anthropometric measurement?

How much work must be done by frictional forces in slowing a 1000.0 kg car from 21 m/s to rest?

How much force does it take to stretch a 10.0 m long, 1.0 cm diameter steel cable by 6.0 mm ? The Young’ s modulus of steel is 2.0×1011 N/m2.  

A person does 500.0 J of work pushing a block up a frictionless ramp of height 5 m. What is the mass of the block?

How much force does it take to stretch a 10.0m long, 1.0 cm diameter steel cable by 3.0 mm ? The Young’ s modulus of steel is 2.0×1011 N/m2.  

The figure shows two forces of equal magnitude acting on an object. If the common magnitude of the forces is 9.3 N and the angle between them is 41°, what third force will cause the object to be in equilibrium?