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BLAST FROM THE PAST BONUS QUESTION WORTH 1 POINT: In a standard electrocardiogram (ECG or EKG), what is the correct pairing of a specific wave/wave complex with the depolarization or repolarization of a particular region of the heart?  

A 3-kg object falls vertically downward in a viscous medium at a constant speed of 2 m/s.  How much work is done by the force the viscous medium exerts on the object as it falls 1.2 m?

A toy rocket, launched from the ground, rises vertically with an acceleration of 16 m/s2 for 6 seconds until its motor stops.  Disregarding any air resistance, what maximum height above the ground will the rocket achieve?

If m = 5.0 kg, what is the tension in string #1?    

A ball thrown vertically from ground level is caught 1.5 seconds later by a person on a balcony at the shown height.  What was the initial velocity of the ball when it was released?  (Select closest answer)

A soccer forward kicks the ball at a speed of 25 m/s and angle of 30o straight towards the goal, from a distance of 10 meters.  How high is the ball when it reaches the goal? 

Two masses, m1 = 9 kg and m2 = 3 kg, are placed at the 60-cm and 100-cm marks of a meter stick, respectively.  The meter stick has no mass and it is free to rotate about a frictionless pivot at the 0-cm end.  The meter stick is released from rest in the horizontal position.  What is the magnitude of the initial linear acceleration of m1? (Select closest answer)

 Which of the following must be trained on a categorized dataset when the fit method is called?

TRUE or FALSE: Cannabinoids are metabolized in exactly the same way and cause all of the same clinical signs in humans, as they do in dogs.

As shown above, two moving blocks are about to collide.  After the collision, the 5kg block is moving at 5.2 m/s in the positive x-direction.  What is the kinetic energy of the two-mass system immediately after the collision?