Aremote controlled toy car starts from rest and begins to accelerate in a straight line. the figure below represents "snapshots" of the car's position at equal 0.5 s time intervals. (assume the positive direction is to the right. indicate the direction with the sign of your answer.)
(a) what is the car's average velocity in the interval between t = 1.0 s to t = 1.5 s?
m/s
(c) is the car's speed increasing or decreasing with time?
increasing
decreasing
constant
not enough information

Porque crees que el agua no podia subir mas de 10 m de altura con ese tipo de bomba

Which statement correctly describes a step-up transformer? a. it increases the amount of electric energy available. b. it increases the voltage of an electric current. c. it changes direct current into alternating current. d. it has more loops of wire in its primary coil.

Uranium has two naturally occurring isotopes. 238u has a natural abundance of 99.3% and 235u has an abundance of 0.7%. it is the rarer 235u that is needed for nuclear reactors. the isotopes are separated by forming uranium hexafluoride uf6, which is a gas, then allowing it to diffuse through a series of porous membranes. 235uf6 has a slightly larger rms speed than 238uf6 and diffuses slightly faster. many repetitions of this procedure gradually separate the two isotopes. what is the ratio of the rms speed of 235uf6 to that of 238uf6? express your answer to five significant figures.