Owhich two elements will be the most alike and why? a. helium (he) and hydrogen (h) b. oxygen (o) and neon (ne) c. lithium (li) and sodium (na)

Anton created a chart listing different types of materials. which best complete the chart? (a)x: copper y: glass(b)x: rubber y: copper(c)x: paper y: silicon(d)x: silicon y: glass

Aparticle initially moving east with a speed of 20.0 m/s, experiences an acceleration of 3.95 m/s, north for a time of 8.00 s. what was the speed of the particle after this acceleration, in units of m/s? give the answer as a positive number.

Need asap ‼️ 20 pts which gravitational force field diagram is drawn correctly? (answers in pictures below)