The science class built a robot that travels 5 m north in 10 s. what is the robot's average velocity?
a. 0.5 m/s
b. 0.5 m/s north
c. 2 m/s
d. 50 s/m north

Astone dropped into a well is heard to strike the water after 8seconds. find the depth of the well if the velocity of sound is 350m/s

What property is a characteristic of a substance that can be observed and does not change the identity of the substance

Select the correct answer from each drop-down menu. compared to its surroundings, the concentration of solutes is low inside a cell. so, the cell is with respect to its surroundings. a particular solute in this cell uses energy for its transport from the cell to its surroundings. this type of transport is called