ConstantsAccording to a simplified model of a mammalianheart, at each pulse approximately 20 g of blood isaccelerated from 0.26 m/s to 0.34 m/s during aperiod of 0.09 s.Part AWhat is the magnitude of the force exerted by the heart muscle?Express your answer to two significant figures and include the appropriate units.HÀ?F = 17• 10 3NSubmitPrevious Answers Request AnswerX Incorrect; Try Again; 2 attempts remainingProvide FeedbackNext >

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Answered: Physics Question

Science

Physics

Physics Question

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Part E Problem: Thinking and Investigation 44. In testing a new material to be used in non-slip door mats. Scientists made a mat made of this new material, and did the following experiment. A force (F) was used to pull a wooden block across the mat as shown below.(5) m μ The size of the force was varied and the data table below shows the size of the force and the block's resulting acceleration. F(N) (m/s²) 20 0.25 25 0.85 30 1.35 35 1.95 Plot the data on the graph below and draw a line of best fit. Extend the line back to the 'y' axis so that you have a y-intercept point and determine the slope of the line. F (N) The industrial standard for the coefficient of friction for non-slip mats is 0.85. a) Using your slope value and your y-intercept value from the graph, determine the coefficient of friction between the block and the mat. b) Would this mat be approved for production based on its coefficient of friction? Briefly explain. 11 of
a) Given the following ideal Atwood machine in an elevator accelerating down at ae = 4.9 m/s2, with m1 = 10 gram (two nickels) and m2 = 5 gram (one nickel) as shown, what is the tension T in the string in millinewton (mN)? (Hint: the upward arrow on ae is correct and just means use "positive is up" conventions for the elevator itself, so here we have ae = -4.9 m/s2 to be put into Einstein's rule that we discussed.) b) Exact same Atwood machine as the previous problem (two nickels and a nickel in an elevator accelerating down at 4.9 m/s2), but now how much time (s) does it take m1, starting from rest, to fall 25 cm relative to the inside of the elevator? I labeled it a and b because they are connected to each other. Please help, thanks!
60° 30° A 50 kg truck engine is lifted using the setup shown. Assuming that the pulleys are frictionless, What force P must be applied to the cable to hold the engine in the position shown with d= 1m? (Hint: because the frictionless pulleys, the tension in the cable will be uniform through out the whole length of the cable.) 2. 3. d 30 kg 600 N/m A 3m 3m Determine the reactions at A and B. 50 kg
Please Answer the following question step-wise with detailed explanations. Thanks in advance? ❤️
An 8.00 kg crate sits on an inclined plane that is inclined at 33.0 above the horizontal. The coefficient of kinetic friction between the crate and the surface of the plane is 0.300. A constant horizontal force F = 28.0 N is applied to the crate (Figure 1), and the crate moves down the plane. Part A If the crate is initially at rest, find its speed 2.00s after the force is applied? Express your answer with the appropriate units. HA Value Units Figure 1 of 1> Submit Request Answer Provide Feedback F 33.0°
PROBLEM 1 Two masses m₁ and m₂ are placed on a horizontal plane without friction. A spring with negligible. mass is placed between the two masses. The masses are pushed one against each other such that the spring is compressed by an amount Ax. The two masses are then released and let free to slide on the plane. The first one (m₂) moves to the left with initial velocity voi, climbs up on an incline up to a height of h-5cm with final velocity v₁-8m/s. The second one m₂ moves to the right on the horizontal plane with velocity voz. Knowing that m₂=3m₁ compute: a) The velocity Voz of the second mass after the spring has decompressed (note that the values Of the masses, the spring compression and the spring constant are unknown). Suppose now that m₁ = 0.5 Kg, m₂ = 1.5 Kg, Ax = 10 cm. X. b) Compute the elastic constant k of the spring. wwwwww mi M₂
estion 5 of 10 Answers: M or what value M of the clockwise couple will the horizontal component Ax of the pin reaction at A be zero? If a couple of hat same magnitude M were applied in a counterclockwise direction, what would be the value of Ax? H A ULL i B M 47 1.8' 56 lb-ft lb 1.8' C 100 C 0/10 O 27°C T-s
The 1.1 kg physics book in figure is connected by a string to a 550 g coffee cup. The book is given a push up the slope and released with a speed of 3.5 m/s. The coefficients of friction are μ = 0.50 and μ = 0.20. (Figure 1) Figure 20⁰ 1 of 1 Part A How far does the book slide? Express your answer with the appropriate units. Value Submit Part B μA Submit O stick to the slope O slide back downhill Provide Feedback Units Request Answer At the highest point, does the book stick to the slope, or does it slide back down? ? Request Answer
• Part D Determine the magnitude of the resultant force. Express your answer to three significant figures and include the appropriate units. ? Value Units Submit Request Answer • Part E Determine the direction, measured clockwise from positive z axis. Express your answer in degrees to three significant figures.
The 20-g bullet is travelling at 400 m/s when it becomes embedded in the 2-kg stationary block. The coefficient of kinetic friction between the block and the plane is = 0.4. (Eigure 1) Figure 400 m/s O 1 of 1 Part A Determine the distance the block will slide before it stops. Express your answer to three significant figures and include the appropriate units. S = Value Submit μA Provide Feedback Request Answer Units ?
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Problem 4.17 7 of 11 Can cars "stop on a dime"? Constants Part A Calculate the acceleration ofa 1200 kg car if it can stop from 43 km/h on a dime (diameter = 1.7 cm.) Express your answer to two significant figures and include the appropriate units. HA als Value Units a = Proctor DeguestAncuer - 8:36 hp L7 8.