Asurveyor needs to determine the height of a tree. she places a mirror on the ground and paces backwards until she sees the top of the tree reflected in the mirror. she marks where she is standing and then measures the distance from this spot to the mirror which is 1212 feet. she then measures the distance from the mirror to the base of the tree which is 9595 feet. the surveyor's height is 5858 inches from the ground to her eyes. how tall is the tree (in feet) assuming level ground from the surveyor's spot to the mirror and from the mirror to the tree?

Samir watches a 100-minute movie on his spaceship. maria's spaceshipe flies in the same direction as samir's spaceship but she observes his move to last 125 minutes and his spaceship to be 40 m long. how long does samir observe his own spaceship to be? according to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does marias voyage take according to samir?

"if the pressure acting on an ideal gas at constant temperature is tripled, its volume isa) reduced to one-third.b) increased by a factor of three.c) increased by a factor of two.d) reduced to one-half"

Acircuit contain a 5-ohm,a3-ohm,and an 8-ohm resistor in series. what is the total resistance of the circuit ?