Please solve and answer the question correctly please. Thank you!! The shaft has a diameter of 46 mm and is made of steel for which G = 75 GPa.(Figure 1)Part ADetermine the magnitude of the angle of twist of wheel B with respect to wheel A.Express your answer in degrees to three significant figures.OB/A =for Panel for Part Al for Part A for Part A do for Part redo for Part A resevor Part A keyboard shortcuts for Part A help for Part ASubmitPrevious Answers Request Answer

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Answered: The shaft has a diameter of 46 mm and…

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter8: Rotational Motion

Section: Chapter Questions

Problem 4STP

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Which of the following statements is true about the relationship between the dot product of two vectors and the product of the magnitudes of the vectors? (a) AB is larger than AB. (b) AB is smaller than AB. (c) AB could be larger or smaller than AB, depending on the angle between the vectors. (d) AB could be equal to AB.
Find the angle between vectors for (a) D=(-3.0i-4.0j)m and A=(-3.0i+4.0j)m and (b) D=(2.0i+4.0j+K)m and B=(-2.0i+3.0j+2.0K)m .
Review. A student is supplied with a stack of copy paper, ruler, compass, scissors, and a sensitive balance. He cuts out various shapes in various sizes, calculates their areas, measures their masses, and prepares the graph of Figure PI.51. (a) Consider the fourth experimental point from the top. How far is it from the best-lit straight line? Express your answer as a difference in vertical-axis coordinate, (b) Express your answer as a percentage, (c) Calculate the slope of the line, (d) State what the graph demonstrates, referring to the shape of the graph and the results of parts (b) and (c). (e) Describe whether this result should be expected theoretically, (f) Describe the physical meaning of the slope.
Consider again the two wind turbines in Problem 32. a. At what point along the 40-m blade would the angular speed of thepoint be the same as the angular speed at the end of the 20-mblade? Explain your answer. b. At what point along the 40-mblade would the translational speed of the point be the same asthe speed at the end of the 20-m blade? Explain your answer.
Review. Assume a certain liquid, with density 1 230 kg/m3, exerts no friction force on spherical objects. A ball of mass 2.10 kg and radius 9.00 cm is dropped from rest into a deep tank of this liquid from a height of 3.30 m above the surface. (a) Find the speed at which the hall enters the liquid. (b) Evaluate the magnitudes of the two forces that are exerted on the ball as it moves through the liquid. (c) Explain why the ball moves down only a limited distance into the liquid and calculate this distance. (d) With what speed will the ball pop up out of the liquid? (c) How does the time interval tdown, during which the ball moves from the surface down to its lowest point, compare with the lime interval tup for the return trip between the same two points? (f) What If? Now modify the model to suppose the liquid exerts a small friction force on the ball, opposite in direction to its motion. In this case, how do the time intervals tdown and tup compare? Explain your answer with a conceptual argument rather than a numerical calculation.
During a visit to New York City, Lil decides to estimate the height of the Empire State Building (Fig. P1.57). She measures the angle of elevation of the spire atop the building as 20. After walking 9.0 102 ft closer to the iconic building, she finds the angle to be 25. Use Lils data to estimate the height h of the Empire State Building.
What are the necessary conditions for equilibrium of the object shown in Figure P12.1? Calculate torques about an axis through point O.
Math Review (a) Solve the equation 7.20 103 m/s = (4.20 103 m/s) ln (Mi/Mf) for the fraction Mi/Mf. (b) If Mi = 2.65 104 kg, calculate Mf.
A torque of 50.0Nm is applied to a grinding wheel (l=20.0kgm2) for 20 s. (a) If it starts from rest, what is the angular velocity of the grinding wheel after the troque is removed? (b) Through what angle does the wheel move while the torque is applied?
Find the angles that vector makes with the and axes.
(a) For what values of the angle between two vectors is their scalar product positive? (b) For what values of is their scalar product negative?
Check Your Understanding Find the angle between forces F1and F3in Example 2.16.

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