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The metric prefix “milli-” means ___________.

A patient weighs 154 lbs. Convert this weight to kilograms. (1 kg = 2.205 lbs)   *answer in correct significant figures

A radio station broadcasts at a frequency of 100.3 MHz (megahertz). Calculate the wavelength of the radio waves in meters.    E=hcλ c=λ* vE = \frac{hc}{\lambda} h=6.626×10−34J⋅sh = 6.626 \times 10^{-34} J·s c=3.00×108m/sc = 3.00 \times 10^8 m/s 1MHz=1×106Hz * Final answer should be in correct significant figures and include proper unit. 

Which of the following best explains why helium is used in balloons instead of hydrogen?

A wheelchair with inadequate seat depth causes the patient’s thighs to be unsupported. This poor positioning MOST increases the risk for which cardiovascular complication?

A patient is able to perform a wheelchair-to-bed transfer safely but requires the PTA to stand close and provide verbal cues and occasional guarding to prevent loss of balance. Which level of assistance BEST describes this scenario?

A physical therapist assistant is measuring a patient’s thigh girth weekly during rehabilitation after a knee injury. What is the PRIMARY purpose of performing girth measurements in this context?

During a manual patient lift, which principle of body mechanics should the PTA MOST prioritize?

A patient who uses a wheelchair is transitioning to the bathroom independently. Which modification MOST improves safety?

A PTA is educating a patient’s family on home modifications for safety. For patients who occasionally need to transfer up a few steps, what is the minimum recommended tread depth to allow safe foot placement?