04 Multiple Choice 0/1
A person weighing 700 N is sitting on a horizontal, uniform board of weight 170 N. The board is 2 meters long and is supported by
vertical chains at both ends. The tension in the chain on the right is 350 N.
How far from the left end of the board is the person sitting?
0.56m
1.21m
1.47m
0.76m
0.83m

When electrons are added to the outermost shell of a carbon atom, it forms--an anion that has a larger anion that has a smaller cation that has a larger cation that has a smaller radius.

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?

The first law of thermodynamics states that heat added to a system is neither created nor destroyed but is as it changes into other forms of energy.