Tommy has a mass of 30 kg is sitting on a merry-go-round that is rotating with a period of 10 seconds. What is the centripetal force acting on Tommy?

What property is a characteristic of a substance that can be observed and does not change the identity of the substance

Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx hurrim timed

The seven sisters, seven stars located more than 400 light-years away in the taurus constellation can be seen here with venus and another constellation, orion. the seven stars stay grouped together but seem to move, like the planet venus. why do stars seem to move like planets in the night sky?