It takes Thomas 20 minutes to ride his bicycle to school, which is 5 miles away. Which of the following statements correctly describes Thomas' speed and velocity as he travels to school?

Two friends at different locations want to communicate with each other by sending low energy signals. which of the following methods can they use to communicate? a) produce x-rays using colliding electrons and send them to radios, which capture sound b) send messages using infrared radiation, which travel in the form of waves c) send radio waves through intervening media like radio and television d) produce sound waves using microwaves from heated objects

Which of the following pairs of elements belong to the same groupa. h and he b. li and bec. c and pb d. ga and ge

The organism shown is a free-living one that is anchored to the bottom of ponds and streams during one stage of its life cycle what is the common name for the group to which this organism belong