A 1000-kg car is moving at 30 m/s around a horizontal unbanked curve whose diameter is 0.20 km. What is the magnitude of the friction force required to keep the car from sliding?

If you pound a feather with a hammer, which one feels a greater force? Explain.

What is the primary difference between a therapeutic ultrasound frequency of 1MHz versus 3.3MHz?

What is the appropriate PTA response to the potential skin response listed above?

According to the Gate Control Theory, activation of large-diameter afferent fibers results in:

Which information MUST be included in the note after iontophoresis?

What type of current will a PTA be using for iontophoresis?

Which of the following would indicate a proper set up if a PTA is treating a quad tendonitis using Dexamethasone?

Use the case to answer the question:Mr. Hall, a 47-year-old administrative professional, reports chronic pain and muscle tightness in his middle trapezius that worsens with prolonged computer use. Upon palpation, the PTA notes palpable tenderness and taut bands with limited scapular retraction. The supervising PT has ordered combined ultrasound and premodulated electrical stimulation to reduce pain and muscle spasms as well as initiating postural re-education and stretching. Which of the following represents the MOST appropriate treatment parameters for combined ES and US to address Mr. Hall’s chronic middle trapezius spasms?

Use the case to answer the question:Mr. Hall, a 47-year-old administrative professional, reports chronic pain and muscle tightness in his middle trapezius that worsens with prolonged computer use. Upon palpation, the PTA notes palpable tenderness and taut bands with limited scapular retraction. The supervising PT has ordered combined ultrasound and premodulated electrical stimulation to reduce pain and muscle spasms as well as initiating postural re-education and stretching. Which of the following best explains how Estim/US combo work together to reduce Mr. Hall’s pain and muscle spasm?