Physics, 05.12.2020 02:40 KENYONWASHINGTON868
An adult A and a child Care pulling horizontally in opposite directions on a wagon. The wagon's
mass is m, the adult's leftward force magnitude is FA and the child's rightward force magnitude
is Fc. The wagon accelerates to the right along the ground with no friction.
ะ
C
TAL
Answers: 2
Physics, 22.06.2019 20:20
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 โ t2)k (iv) r (t) = 2t j + (50 โ t2)k (v) r (t) = (50 โ 2t) i + 2t j + (50 โ 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
Physics, 22.06.2019 21:00
What is the efficiency of an engine that does 80 j of work and exhausts 320 j of heat while taking in 400 j of heat ? a. 10% b. 20% c. 80% d. 25%
Answers: 1
Physics, 23.06.2019 10:50
If we decrease the time it takes for a car to travel over the same distance this will
Answers: 2
An adult A and a child Care pulling horizontally in opposite directions on a wagon. The wagon's
mas...
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