Which type of wave requires no medium?

ultrasonic wave

water wave

light wave

sound wave

Zeros are never significant digits true or false

Two forces present in projectile motion are: a. Gravity and acceleration b. Gravity and initial forward velocity c. Gravity and air resistance d. Gravity and weak nuclear force

Demand for a certain product is forecast to be 800 units per month, averaged over all 12 months of the year. The product follows a seasonal pattern, for which the January monthly index is 0.8.

What is meant by the "objectivity" of web documents, and what are the three things to look for when evaluating a website for objectivity?

4.5 billion years as a regular number

What scientific practice is this? 1) collecting data 2) asking a question 3) providing explanations 4) communicating results

The kinetic energy of an object depends on both the objects mass and velocity. a. True b. False

How does a walkie-talkie work and why do people still use them?

A 125-kg merry-go-round in the shape of a uniform, solid, horizontal disk of radius 1.50 m is set in motion by wrapping a rope about the rim of the disk and pulling on the rope.

Jose wandered 4 kilometers at 2 kilometers per hour. How long did Jose wander?