Physics apex:
debra and julie push on a table in the same direction. debra pushes forwa...
Physics, 02.01.2020 19:31 vivian2020
Physics apex:
debra and julie push on a table in the same direction. debra pushes forward with a force of 200 n, and julia pushes forward with a force of 150 n. what is the net force on the table.
a: 50 n backward
b: 350 n backward
c: 50 n forward
d: 350 n forward
Answers: 1
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Let v1, v2, w be three linearly independent vectors in r 3 . that is, they do not all lie on the same plane. for each of the following (infinite) set of vectors, carefully sketch it in r 3 , and determine whether or not it is a vector space (i.e., a subspace of r 3 ). explain your reasoning
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Frequency of electromagnetic waves that a radio station is assigned is called
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The base of a 50-meter tower is at the origin; the base of a 50-meter tree is at (0, 50, 0). the ground is flat and the z-axis points upward. the following parametric equations describe the motion of six projectiles each launched at time t = 0 in seconds. (i) r (t) = (50 + t2)k (ii) r (t) = 2t2 j + 2t2k (iii) r (t) = 50 i + 50 j + (50 − t2)k (iv) r (t) = 2t j + (50 − t2)k (v) r (t) = (50 − 2t) i + 2t j + (50 − t)k (vi) r (t) = t i + t j + tk (a) which projectile is launched from the top of the tower and goes downward? at time t = , the projectile hits the ground at point (x, y, z) = . (b) which projectile hits the top of the tree?
Answers: 2
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