What has a positive charge a comb or an elastic band? Why?

What is an ethical vacuum?

State two applications of plane mirrors

A uniform ladder of length l and mass m1 rests against a frictionless wall. the ladder makes an angle θ with the horizontal.

In this case, lithium would be classified as a (n) A) atom. B) compound. C) ion. D) molecule.

How does energy affect a wave

Starting at its rightmost position, it takes 2 seconds for the pendulum of a grandfather clock to swing a horizontal distance of 18 inches from right to left and 2 seconds for the pendulum to swing back from left to right.

A question about a moral issue is answered by examining facts rather than opinions. is generally considered a scientific question. cannot be answered with scientific methods. cannot be debated through discussion.

Who is most likely to have a physiological age that is much younger than his or her actual age?

Inflammation happens when the mucous membranes cannot stop a pathogen. True False

If the diameter of the space station is 730 m, how many revolutions per minute are needed for the "artificial gravity" acceleration to be 9.80m/s2?