Asteel beam is rotated in a horizontal plane to provide the centripetal acceleration for
training pilots. if the pilot sits 2.0 m from the center of rotation, at what speed must he rotate
to experience a horizontal centripetal acceleration of 78 m/s? ?

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?

Which model displays the change in a gas when the temperature of the gaseous system decreases?

Is the vertical component of velocity ever zero?