Ip force to hold a baseball a person holds a 1.42-n baseball in his hand, a distance of 34.0 cm from the elbow joint, as shown in the figure(figure 1) . the biceps, attached at a distance of 2.75 cm from the elbow, exerts an upward force of 12.6 n on the forearm. consider the forearm and hand to be a uniform rod with a mass of 1.50 kg . what is the net torque?

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.