The position of a dragonfly that is flying parallel to the ground is given as a function of time by F = [2.90 m + (0.0900 m/s²)t²]i- (0.0150 m/s³)t³ j. Part A At what value of t does the velocity vector of the insect make an angle of 34.0° clockwise from the x-axis? Express your answer with the appropriate units. t = 2.70 s Submit ✓ Correct Part B At the time calculated in part (a), what is the magnitude of the acceleration vector of the insect? Express your answer with the appropriate units. Previous Answers O a = 0.33 Submit μÀ 1 m S² ? Previous Answers Request Answer X Incorrect; Try Again; 25 attempts remaining

The position of a dragonfly that is flying parallel to the ground is given as a function of time by F = [2.90 m + (0.0900 m/s²)t²]i- (0.0150 m/s³)t³ j. Part A At what value of t does the velocity vector of the insect make an angle of 34.0° clockwise from the x-axis? Express your answer with the appropriate units. t = 2.70 s Submit ✓ Correct Part B At the time calculated in part (a), what is the magnitude of the acceleration vector of the insect? Express your answer with the appropriate units. Previous Answers O a = 0.33 Submit μÀ 1 m S² ? Previous Answers Request Answer X Incorrect; Try Again; 25 attempts remaining

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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answer c and d please
The minute hand on a watch is 2.00 cm in length. Use a coordinate system in which the y-axis points toward the 12 on the watch face. Part A What is the displacement vector of the tip of the minute hand from 8:00 to 8:20 a.m.? Enter the x and y components of the displacement vector in centimeters separated by a comma. ► View Available Hint(s) ——| ΑΣΦ Arz, Ary= Submit Part B Ar. Ary 0,0 cm Submit What is the displacement vector of the tip of the minute hand from 8:00 to 9:00 a.m.? Enter the x and y components of the displacement vector in centimeters separated by a comma. ► View Available Hint(s) Previous Answers Sw Correct ? cm Review
PROBLEM 1A man pushing a mop across a floor causes it to undergo two displacements. The first has a magnitude of 142 cm and makes an angle of 1220 c.c. w.r.t. x-axis. The resultant displacement has a magnitude of 143 cm and is directed at an angle of 400 c.c. w.r.t x-axis. Find the magnitude and direction of the second displacement.
A high diver leaves the end of a 5.5 mm high diving board and strikes the water 1.2 ss later, 3.5 mm beyond the end of the board. Considering the diver as a particle, Part C Determine the maximum height reached. Express your answer to two significant figures and include the appropriate units. Part D Determine the magnitude of the velocity v⃗fwith which she enters the water. Express your answer to two significant figures and include the appropriate units. Part E Determine the angle of the velocity v⃗f with which she enters the water. Express your answer to two significant figures and include the appropriate units.
A physics book slides off a horizontal table top with a speed of 1.20 m/s. It strikes the floor after a time of 0.450 s. Ignore air resistance. Part A Find the height of the table top above the floor. Express your answer with the appropriate units. h = Submit Part B Value x = Request Answer Find the horizontal distance from the edge of the table to the point where the book strikes the floor. Express your answer with the appropriate units. Units Value Units
just part c
Part C For the vectors shown in the figure, determine (Eigure 1) the magnitude of 2A – 3B+ 20 Express your answer using three significant figures. |2Ä – 3B + 20| = !! units Submit Request Answer Figure < 1 of 1 Part D the direction of 2.4 – 3B + 2Ő A (A = 44.0) 28.0 Express your answer using three significant figures. 56.09 Č(C= 31.0) below +x aIS Submit Request Answer P Pearson B (B = 26.5)
Part C Long Answer question (4 x 0.75 = 3 Marks) A car travels 12km due west, 15km due south and 45 km in a direction 50° north of east. Calculate the magnitude and direction of his resultant displacement. () The sum of the X components (2X) is = km (i) The sum of the Y components (ZY) is = km (iii) The magnitude of the resultant displacement is = km (iv) The direction (angle) of the resultant displacement (in degrees) is °, North of East
A displacement vector points in a direction of θ = 23° left of the positive y-axis. The magnitude of this vector is D = 155 m. Refer to the figure. Enter an expression for the x-component vector, Dx, in terms of D, θ, and the unit vectors i and j.
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A man pushing a mop across a floor causes it to undergo two displacements. The first has a magnitude of positive x axis. The resultant displacement has a magnitude of R = 138 cm and is directed at an angle of direction of the second displacement. Step 1 The diagram suggests that d, is larger than either of the other vectors and is in a fourth-quadrant direction. 2 d₁ Then d₂ = R-d₁ 1 Substituting, d 2 y Step 2 We will use the component method for a precise answer. We already know the resultant displacement, so the algebra of solving a vector equation will guide us to do a subtraction. Step 3 The resultant displacement of the mop is R = ď₁ + 1 2 = = 19₂ R (138 138 cm at 33.0°) - 157 Step 4 The meaning of the negative sign reverses the direction of the second vector so we can rewrite the previous equation as (138 cm at 33.0°) + (157 cm at 33 X The response you submitted has the wrong sign.º), which, in components, is d₂ = [138 cos 33 + 138 sin 125 Your response..differs from the correct…
The path of motion of a 7-lblb particle in the horizontal plane is described in terms of polar coordinates as rr = (2 tt ++ 1)ftft and θθ = (0.5 t2t2 −− tt) radrad, where tt is in seconds.