UpwardsWhich way do the arms move in abduction?Downwards (opposite of add)Which way do the arms move in adduction?Rotating them in a circular directionWhat is circumduction in relation to your hands?Prime moverMuscle with the major responsibility forma certain movementAntagonistMuscle that opposes or reversed a prime moverSynergistMuscle that aids a prime mover in a movement and helps prevent rotationFixatorStabilizes the origin of a prime moverSlow twitch muscle fiberUsed for repetitive movements; recruited first in any activityMitochondira; oxygenWhat are slow twitch muscle fibers dense with? What do they use for energy?Slow twitch; fast twitchWhich type of muscle fiber is used for aerobic (w/ O2) exercise? Anaerobic?Fast twitch muscle fibersUsed for quick explosive movements; recruited second in any activity; low in mitochondriaInvoluntaryA muscle that mives without conscious control (ex: smooth and cardiac)VoluntaryA muscle that moves with conscious control (ex: skeletal)CardiacStriated muscle of the heartOriginPoint of attachment for a muscleInsertionPoint of attachment of a skeletal muscle to a boneAtrophyDecrease in sizeHypertrophyIncrease in size

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A fully loaded shipping container has a mass of 30,000 kg. If local acceleration of gravity is $9.81 m/s^2,$ determine the container's weight, in kN.

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Why is the following situation impossible? A worker in a factory pulls a cabinet across the floor using a rope. The rope make an angle $\theta=37.0^{\circ}$ with the floor and is tied $h_{1}=10.0 \mathrm{cm}$ from the bottom of the cabinet. The uniform rectangular cabinet has height $\ell=100 \mathrm{cm}$ and width $w=60.0 \mathrm{cm},$ and it weighs 400 N. The cabinet slides with constant speed when a force F = 300 N is applied through the rope. The worker tires of walking backward. He fastens the rope to a point on the cabinet $h_{2}=65.0 \mathrm{cm}$ off the floor and lays the rope over his shoulder so that he can walk forward and pull. In this way, the rope again makes an angle of $\theta=37.0^{\circ}$ with the horizontal and again has a tension of 300 N. Using this technique, the worker is able to slide the cabinet over a long distance on the floor without tiring.

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earth science

a. What is salinity? What is the average salinity of ocean water? b. Describe one factor that increases the salinity of seawater and one factor that decreases its salinity. c. Would you expect the seawater just below the floating ice in the Arctic Ocean to be higher or lower in salinity than the water in the deepest part of the ocean? Explain.

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environmental science

What part of the climate is helped by the carbon cycle?

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