A19g bullet is traveling at 334m/s when it strikes a block of wood. if the block of wood exerts a friction-like force of 50,000 n opposing the motion of the bullet, how far will the bullet penetrate the block of wood? (assume the bullet does not drop in height at all.)

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 2 options: the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the cold balloon expands and rises. the warm balloon shrinks and sinks. the warm balloon expands and rises. the cold balloon shrinks and sinks.

Am i correct on these two physics questions?

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