Anton created a chart listing different types of materials.

A 2-column table with 4 rows titled Types of Materials. The first column labeled Type has entries conductor, insulator, semiconductor, superconductor. The second column labeled Example has entries silver, X, Y, mercury.
Which best complete the chart?

X: copper
Y: glass
X: rubber
Y: copper
X: paper
Y: silicon
X: silicon
Y: glass

Which is the best predictor of the radioactive nature of an isotope? o the proton-to-electron ratio the neutron-to-proton ratio o the neutron-to-electron ratio the electron-to-proton ratio

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?

Clara is shopping in a grocery store with her friend. each has their own shopping cart in which they want to place their items. the shopping carts are identical. clara and her friend add the same type and number of items to each of their carts. in the baking aisle, however, clara adds 20 pounds of sugar to her own cart, and her friend adds only 10 pounds of sugar to her own cart. which of the following statements best explains what clara must do to accelerate at the same rate as her friend? a. she must add more sugar to her cart. b. she must apply more force to move her cart. c. she must add 20 pounds of salt instead of 20 pounds of sugar to her cart. d. she must apply less force to move her cart.