Ilean against a wall, applying force. which could be described as the “reaction force? ”

a. my force against the wall
b. the walls force against me
c. the force of gravity
d. no reaction
e. not enough information

Which units can be used to measure length or distance? check all that apply. gram meter kilometer liter inch

Let v1, v2, w be three linearly independent vectors in r 3 . that is, they do not all lie on the same plane. for each of the following (infinite) set of vectors, carefully sketch it in r 3 , and determine whether or not it is a vector space (i.e., a subspace of r 3 ). explain your reasoning

An object weigh 40n in air ,weigh 20n when submerged in water,and 30n when submerged in a liquid of unknown liquid density.what is the density of unknown of liquid?