ZuoTi.Pro
Question
Hi! I’m wondering if anyone can help with these physics problems from my exam krackers book? I am studying for the mcat and the explanations in the book and student doctor are not helping me. Thanks so much!!
A. 2A B. 3 A C. 6A D. 12 A after the circuit has been on a long time? 12 V 2Ω 2Ω A. 1.2 x 10s C B. 2.5 x 106 C C. 6.0 x 10 C D. 1.7×10-7 C
ERhal to the ground at lower tential to the ground at higher potential to a cloud at lower potential to a cloud at higher Neuromodulation is the application of therapeutic levels of electrical current for the treatment of medical discases. Clinically, this is pulse generator (IPG) to deliver electrical stimuli to tissue. The electrical stimuli generates an action potential which modulates the release of neurotransmitters. Some examples of tn used in medical practice include deep brain stimulation s and spinal cord stimulation (SCS), which inhibits the release of neurotransmitters that signal for pain, SCS may be used for patients with chronic back pain who fail medical therapy The devices are powered by a sealed medical grade battery within the IPG. The devices lifetime depends on the energy capacity of the battery and the rate of energy depletion. is dictated by the circuit elements. The power consumed during electrical stimulation depends on the three major components: the current, the resistance of the tissue (R), and the internal resistance of the battery (R). In order to prolong the life of the battery, engineers design IPGs that deliver the majority of power to the tissue, while minimizing power lost through internal resistance. Additionally, adjacent tissue can also be added in parallel to the circuit to achieve neuromodulation at multiple sites. If the electrodes of the IPG are attached to an axon, the axon may exhibit resistive properties analogous to a wire, as given in Equation 1, where R-resistance, L = length, A-cross-sectional surface area, and p- electrical resistivity Equation 1 In general, the axonal resistance is negligible relative to the resistance of the neuromodulation circuit. However, in the event that the axonal resistance becomes contributory, it must be factored in when computing an IPGs lifetime due to additional power consumption This passage was adapted from Energy Efficient Neural Stimulation: Cospling Cincuit Design and Membeane Biophysics Foutz T3, Ackermann DM Jr, Kilgore KI, Mclntyre CC. PleS ONE 712e1901. doi: 10.1371 joumal pone.0051901 for use under the terms of the Creative Commons CC BY 3.0 license http/iereativecommons org licenses by/3.0 legaloode). 76. Which of the following conditions will maximize the power delivered to the tissue? A. Increasing the internal resistance B. Increasing the tissue resistance C. Decreasing the tissue resistance D. Decreasing the battery voltage 77. The current delivered to the tissue is given by: A. V(R). B. V(R). C. V(R+R. D. V(I/R +/R
ewolved divergenly in respor Mammalian bones have selective pressures of their spetvea 2 show the lever system in the forel hoses is to act as Each lever system allows for a rat mammals take advantage Passage I (Questions 24-30) of limb movement suited to its as in-Koce to an out-force via a center of rms exist: first order mammalian bones is to act as f third ornder ever wyn running An important function of many rotation or fslcram. Three orders of lever a wbere the fulcrum separates the in-force and the out-force, onder where the in-force and out-force are on the same side out force is nearest to the fulerum, and thind order where are also on the same side but the in-force is nearest the fuleram. le manmalian bone lever systems, the in-force is supplied by a musele, one end of which is attached to the bone at the point where can be kept close to the body n unne strides besswif running mammals, thendby on unnecessary movements; short into long strides. The mass has been reduced in th both forces these swift ǐlerce is applied and the other end of which is anchored to a separate bone closer to the body Fulcram Fulcrum Line of Muscle Action (in-force) Line of Muscle Ac (in-Sorce) In-lever Arm In-lever Arm Out-lever Arm Out-lever Arm Force exerted on Giround Force exerted on Ground (out-force) (out-force) Figure 2 26. If the out-lever arm in Figure 1 is 1 m and the in-lever arm Figure 1 24. Whar typs of lever is shown in Fiure ?7 A. First order B. Second order C. Third order D. It cannot be determined from the figure. is 10 cm, and the mammal applies an in-force of 10 N,what will be the approximate out-force A. 1N В.ION C. 40N D. 100 N 25. Assuming the figures are drawn to scale, if the same in- force is applied to each lever system, which lever system will have the greatest out-force? A. The lever system in Figure I B. The lever system in Figure 2 C. The out-force would be the same in both lever systems D. The answer cannot be determined from the information 27. The animal in Figure 2 is well adapted for rapid digging I we assume ideal conditions for the lever system in Figure 2. compared to the in-force supplied by the muscle,the ou- force must: A. do less work. B. do more work. C. be less than the in-force. D. be greater than the in-force. given. EXAMKRACKERS MrA
9. Which position has the greatest in-lever arm? A. B. C. D. 30. Relative to second order levers, the third order levers present in musculoskeletal systems confer which of the following advantages and disadvantages? A. Decrease the force required to move the load; B. Increase the distance over which the load is moved; C. Decrease the force required to move the load; D. Decrease the work required to move the load: decrease the distance over which the load is moved increase the force required to move the load increase the work required to move the load increase the force required to move the load
science   physics   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

1-9 2 12V 2. afor very long tme crent i beaneh -6

0 0
Add a comment
Know the answer?
Add Answer to:
Hi! I’m wondering if anyone can help with these physics problems from my exam krackers book?...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • my class needs help Exercise 2: Generating Electricity with a moving Bar Two going through them...

    my class needs help Exercise 2: Generating Electricity with a moving Bar Two going through them in resistance is R. A sliding metalic bar with no electrical resistance is made to move to the right ntol parallel conducting rails are placed a distance I apart with a magnetic field B to the paper. The rails are connected with a fixed wire whose electrical with a constant speed v (left side of diagram above) a. In order to be consistent with...

  • A rectangular wire loop located in the plane of the page has a width L, and its length. X

    A rectangular wire loop located in the plane of the page has a width L, and its length. X. is determined by the position a movable rail that forms the fourth side of the rectangle, as shown. The total electrical resistance of the wire loop is R, and an externally applied magnetic field, B, is directed out of the page. The rail is moving towards the right with speed v. Assume that the x direction is towards the right of...

  • Please help with 5 and 6 AND SHOW UNITS 1. What is the resistance of a...

    Please help with 5 and 6 AND SHOW UNITS 1. What is the resistance of a thin tube iled with saline solution that is 2 cm in length and has a cross sectional area of 1 x 10 m2? Assume the resistivity of salline solution to be 0.1 Qm How 2. much charge is moved over a period of 10 s for a circuit that has a current of 0.2 amperes? 3. A). Wha ch t is the electrical force...

  • 14) Which of the following is NOT a typical electrical component? A) Resistor B) Capacitor C)...

    14) Which of the following is NOT a typical electrical component? A) Resistor B) Capacitor C) Megatron Inductor E) Transformer D) 23) Convert 6.8 x 10-5 W to the closest standard metric prefix. A) 68 °W B) 0.68 uW C) 680 uW D) 6.8 uw 24) Convert 3.95 x 10-4 A to the closest standard metric prefix. A) 3.95 mA 39.5 mA 0.395 mA D 395 mA Convert the following: 25) 2 x 10-3 Amp = A) 2 microamps 2...

  • Help with questions 1-6 please Homework #1 Due: Friday January 25, 9:00 A.M. SHOW GENERAL FORMS...

    Help with questions 1-6 please Homework #1 Due: Friday January 25, 9:00 A.M. SHOW GENERAL FORMS OF EQUATIONS, HOW YOU DERIVED YOUR ANSWERS AND SHOW UNITS 1. What is the resistance of a thin tube filled with saline solution that is 2 cm in length and has a cross- Name sectional area of 1 x 10s m2? Assume the resistivity of saline solution to be 0.12 m. How much charge is moved over a period of 10 s for a...

  • EG 171 Test Chapters 7 Date: 214れ ,3& Name 24. The amount by which the actual...

    EG 171 Test Chapters 7 Date: 214れ ,3& Name 24. The amount by which the actual resistance can differ from the color-coded value is the: a. temperatare coefficient b. power rating e differiential resistance D tolerance 25. The resistance value of a chip resistor is determined from the size of the resistor three digit number printed on the body d. color-code c. three letters printed on the body True/False Indicate whether the statement is true or false 26. The practical...

  • Can you please help me to find Possible test questions? Course Here.com Test #4 " Autonomic...

    Can you please help me to find Possible test questions? Course Here.com Test #4 " Autonomic Nervous System Overview of the Autonomic Nervous System (ANSH Maior Functions: maintain optimal muscle in order to maintain homeostatic state within the body Aalso is inv performance of visceral organs, glands, smooth muscle, and cardiac not under conscious control: regulates heart rate, blood pressure, MOST "effectors" (organs & tissues regulated) are visceral- r function, and secretions emperaturs smooth musele contraction, glandula most are not...

  • Assignment 5 Required Reading: Chapter 12 Head and Spinal Injuries

    Assignment 5                                                                                                                        Required Reading: Chapter 12 Head and Spinal Injuries,   Chapter 13 Chest, abdominal, and Pelvic Injuries;   Chapter 14 Bone, Join, and Muscle Injuries; Chapter 15 Extremity Injuries;        Chapter 16 Splinting Extremities                       True or False- Mark each statement as true (T) or false (F)1. Remove objects embedded in an eyeball2. Scrub and rinse the roots of a knocked-out tooth3. Preserve a knocked-out tooth in mouth wash4. Inability to move the hands or feet, or both may indicate a spinal injury5. If...

  • pleas help me in this do any question you know using National Electrical Code 2011 Applied Electricity NEC...

    pleas help me in this do any question you know using National Electrical Code 2011 Applied Electricity NEC worksheet t hree Copper conductors with THHN insulation run in Electrical A branch-circuit Consther conductors. The conductor terminations are rated for a maximum ure in the area of this installation is not expected to exceed 30C size 8 AWG, the maximum ampacity of the conductors If the conductors for this circuit are permitted A 40 amperes. B. 50 amperes. to be used...

  • The following guidelines outline the basic template for a robot vacuum cleaner game. The game must be implemented in c programming language. It mimics a robotic vacuum cleaner. The code must only use...

    The following guidelines outline the basic template for a robot vacuum cleaner game. The game must be implemented in c programming language. It mimics a robotic vacuum cleaner. The code must only use the following libraries: #include <math.h> #include <stdlib.h> #include <string.h> #include <limits.h> and any .graphics and .timers libraries. The guidelines are outlined as follows: Terminal Set-up: you may assume that the terminal will be quite large, for example, on the order of 150×50, or more. Status Display: The...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT