Which is likely to produce the brightest spectra?

A. Holographic gratings

B. Reflection gratings on plastic

C. Transmission gratings on glass

D. Replica transmission gratings on plastic

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?