Two electric charges, Q1 and Q2, are separated by a finite…

Two electric charges, Q1 and Q2, are separated by a finite distance. Somewhere between the charges, on the line connecting them, the electric field they produce is zero. If the point of zero field is closer to Q1, what can we conclude about the sign and magnitude of the two charges?

A PTA works with a 37-year-old male referred to physical the…

A PTA works with a 37-year-old male referred to physical therapy with radicular pain in the lower extremity. A note from the referring physician indicates that magnetic resonance imaging (MRI) confirmed the presence of a disc herniation with resultant L4 nerve root impingement. When completing muscle testing, which muscle would you expect to be the MOST affected by the patient’s current condition?

You are assigned to collect neck and trunk muscle strength d…

You are assigned to collect neck and trunk muscle strength data for a patient receiving physical therapy following a back injury. While interviewing your patient prior to testing, he reports he has been having trouble controlling his BP since Thanksgiving. You measure it at 170/100 mm Hg. He also complains of a persistent headache, not relieved by ibuprofen or acetaminophen. The most appropriate action is to: