If a hockey puck is made to slide along a straight line on a completely frictionless surface, which statement about the motion of the hockey puck is true? the hockey puck will come to a halt immediately. the hockey puck will continue moving with constant velocity along a straight line. the hockey puck will accelerate and continue moving in straight line. the hockey puck will continue moving in random direction. nextreset

Agroup of students is studying convection current. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other is in an area with warm air. after 10 minutes, the balloon are released from a height of 1 meter. which of the following to the students most likely observe? a) the warm balloon expands and rises. the cold balloon shrinks and sinks b) the balloon both rise. the cold balloon is larger than the warm balloon c) the cold balloon expands and rises. the warm balloon shrinks and sinks d) the balloon rise at the same rate. both balloons are the same size

Which statement accurately represents the arrangement of electrons in bohr’s atomic model?

Give a real-world example of an energy transformation that uses two of the following forms of energy: chemical, mechanical, nuclear, gravitational, radiant, electrical, thermal (heat), and/or sound.