Answered: (5) Use method of sections to determine… | bartleby

Algebra & Trigonometry with Analytic Geometry

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter5: Inverse, Exponential, And Logarithmic Functions

Section5.3: The Natural Exponential Function

Problem 44E

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Related questions

Question

(5) Use method of sections to determine the
force in member BC of the loaded truss. Apply
only one single equation of equilibrium.
Ans: BC= 4.81 kips T
3 kips
5 kips
4 kips
2'
B
3'
3'
A
F
3'
2'
D
1.5'
E

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The kinetic energy E of an object varies jointly with the object’s mass m and the square of the object’s velocity v . An object with a mass of 50 kilograms traveling at 16 meters per second has a kinetic energy of 6400 joules. What is the kinetic energy of an object with a mass of 70 kilograms traveling at 20 meters per second?
a projectile launched at t=0 (t is measured in seconds) follows a path given by x=30t, y=-5t^2+80t, where x is the horizontal direction and y is the upward direction. the projectile lands after a. 16 seconds b. 8 seconds c. 4seconds
The costs of various sailboats of varying lengths are xx, length in feetyy, thousands of dollars......The line of best fit for the data in this table (no data shown) is y=3.28x−22.59y=3.28x-22.59. Approximate the cost of a sailboat (to the nearest thousand) that is 30 ftftlong. $ thousand
Use the method of variation of parameters, thank you!
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45) Find the area "under" v7 (t) on the interval [6,9]. What does your answer tell us about Mr. Goza?
Calculate y” and y”’
The fraction of the senior class S, who has heard about the Cross Country Team state victory increases at a rate proportional to the fraction of the class who has not yet heard the news. Which equation describes the relationship? as as А. = k(1 – S) B. = 1- kS dt dt as ds С. = kS D. = -kS dt dt
Make a model to solve the problem.When traffic lights are installed, planning must include the duration of the green and the yellow lights. The stopping distance d (in feet) for a car traveling v mph when the driver has a reaction time of t sec is d = 1.5tv + 0.06v2. Assume that the intersection is 50 ft wide and the speed limit is 45 mph. If the reaction time of the driver is 1 sec, what should the minimum duration for the yellow light be? (Hint: d = rt, where r is rate, but watch your units! Round your answer to two decimal places.)
Consider an object launched vertically upward from the top of a hill that is l44 ft above level with an initial velocity of 96 H/sec. Hs position would be given by S/t)= -162+96t +144 %3D What is the average velocity over the first 3 seconds of flight. Must calculate net distance traveled and divide by t-3 s(3)-sLo) - [-16(3)² +96(3) +144] - [-16l0)? + 96(0) + 144] 14u 3-0 - 48 ft/scc %3D %3D 3 3 what is the instantaneos velocity at t=3 ? For example, ompute average velocity from t- 3.99 to t: 4.01 s(4.01)- s(3.99) = - 32 A/sec an estimate of velocity at t=4 4.01-3.99) average= s(t+At)-st). s(t+At) - s(t) +At -t At lim (-32t-16 At + 96) A reasonable velocity function of the projectile would be vt)= 96-32t derivative of -16t?+96t + 14 Extra Credit How many seconds until the object reaches maximum heigh+ and what is the maximum height?

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