Explain the difference between alternating (ac) and direct current (dc)

What is thr principle of screw gauge

A term often used to describe the frequency of a sound is?

You have just collected data and discover that the stopwatch you uesd is not working properly. which of the following is the best coures of action? a. repeat the experiment using a stopwach that functions correctly. b.

Which example identifies a change in motion that produces acceleration?

What is a scientific vacum

Why do scientists think that our solar system must have formed sometime after nearby supernovae explosions?

A professor sits on a rotating stool that is spinning at 10.0 rpm while she holds a heavy weight in each of her hands. Her outstretched hands are 0.785 m from the axis of rotation, which passes through her head into the center of the stool.

If an injury is caused by impact from an object alone, is this considered a caught-in or - between incident? Select the best option No, this is a struck-by incident Yes No, this type of incident is undefined

Even though animals can communicate with each other to a limited extent, no animal can express itself through: A : motions B : noises C : speech D : instinct

1. a. What is the name of the 2d Century Roman Scientist and Astrologer who created a set of "Handy Tables of data to compute the position of the Sun, moon and stars?