A student studies the behavior of sound using a wave generator made from a string tied to a fixed support and connected to a driver that is controlled by a remote. The driver vibrates the string by moving it up and down, creating waves on the string. The vibrations per second in the driver are increased, and the images show how the waves on the string change.

Frequency is decreasing.

Frequency is increasing.

Loudness is decreasing.

Loudness is increasing

Almost all states designate a group of professional as mandatory reporters of suspected child abuse or neglect. is it only school administration staff are included on nearly every list?

Which of the following represents the results of a review of well-controlled studies of vitamin c supplementation on the resistance to, and recovery from, colds? there was a reduction in the duration of colds by 50% on the average. there was a slight effect on reducing the duration and severity of colds for people taking vitamin c supplements. there was a significant reduction in the duration of colds in people who consumed at least one gram a day. there was a significant reduction in the number of colds only in people who consumed > three grams per day.

What would you call 2-1-1 for? a. product safety info b. after a car crash c. referral to suicide counseling d. after a home break in