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BLAST FROM THE PAST BONUS QUESTION WORTH 0.5 POINTS: Phase 2 of the action potential of cardiac myocytes (myocardial cells), which is denoted by 9, IS SPECIFICALLY ASSOCIATED with which of the following?  

A reputable business has a uniform rectangular sign 1.0 m in width, supported by two wires as shown.  If the mass of the sign is 6 kg, what is the tension in wire A on the left? (Select closest answer)

A rock attached to a string swings clockwise in a vertical circle. Which free body diagram could correctly describe the force(s) on the rock when it is at the lowest point? (Explain, i.e. show work!)

If the PCA (principal component analysis) features of a data point x is [1, -½, 4], which of the following options correctly represents x’s coordinates in the original feature space?

Which of the following is the Pyrethroid Insecticide most commonly associated with neurotoxicity/tremors/seizures in CATS on which canine spot-on flea products  have been applied?

A 5-kg piece of lead (specific heat 0.03 cal/g oC) having a temperature of 90 oC is added to 450 grams of water (specific heat 1 cal/g oC) having a temperature of 10 oC .  What is the final equilibrium temperature (in oC) of the system?

What will be returned by the code given below?   import numpy as np arr = np.array([[6, 2, 4, 8], [2, 9, 3, 1]]) arr_reshaped = arr.reshape(4, 2) index = np.argmin(arr_reshaped, axis = 1) index.tolist()

Which of the following procedures would required use of an operating microscope?

Which of the paranasal sinuses are numerous, small, and located on either side of the bridge of the nose?

A body of mass 7 kg is suspended by a spring which stretches 5 cm when the mass is attached.  It is then displaced downward an additional 10 cm and released.  What is the frequency of oscillation?