It is painful to walk barefooted on the ground covered with edged pebbles. a) True b) False
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It is painful to walk barefooted on the ground covered with edged pebbles.
a) True
b) False
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- Can i get help with this problem1.Perform the following vector arithmetic. A=3ˆı+5ˆȷ+7kˆ B= ˆȷ−kˆ C=3ˆı−5kˆ (a) ∣A+B×C∣ (b) C⋅(B×A) (c) Construct a unit vector dˆ that is perpendicular to both A and C.Vector A→, which is directed along an x axis, is to be added to vector B→, which has a magnitude of 9.30 m. The sum is a third vector that is directed along the y axis, with a magnitude that is 5.10 times that of A→. What is the magnitude of A→?
- 1. Let v = -51 + 53 be a vector in R². (a) Find v. (b) Find the angle, 0, in degrees, that v makes with the positive x-axis. (Answer in radians between 0 and 27.) (c) Find a unit vector that points in the same direction as v. Answer in component form.10) A certain vector in the xy plane has an x component of 4[m] and a y component of 10[m]. Without changing its length, the vector is rotated in the xy plane until its x component is doubled. Its new y component is about: A) 20 [m] B) 7.2 [m} C) 5.0 [m] D) 4.5 Įm] E) 2.2 [m]A room has dimensions 2.18 m (height) x 4.60 mx 6.62 m. A fly starting at one corner flies around, ending up at the diagonally opposite corner. (a) What is the magnitude of its displacement? (b) If the fly walks rather than flies, what is the length of the shortest path it can take? (Hint: This can be answered without calculus. The room is like a box. Unfold its walls to flatten them into a plane.) (a) Number 8.35 Units (b) Number 8.20 Units m