HELP ASAP WILL BE MARKED BRAINLIEST A student made a table comparing mass and weight. What word best replaces X?

Mass Weight
Measure of how much material is an object--- Measure of the force of gravity pulling down on an object
Measured with a X-- Measured with a scale
Measured in grams or kilograms Measured in Newtons

choices:
Measuring cup
Pan balance
Thermometer
Ruler

Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle

Aball horizontally thrown from a cliff at 8m/s

An electron is trapped at a defect in a crystal. the defect may be modeled as a one-dimensional, rigid-walled box of width 1.00 nm. (a) sketch the wavefunctions and probability densities for the n 1 and n 2 states. (b) for the n 1 state, nd the probability of nding the electron between x1 0.15 nm and x2 0.35 nm, where x 0 is the left side of the box. (c) repeat (b) for the n 2 state. (d) calculate the energies in electron volts of the n 1 and n 2 states