As air is pumped from the vacuum jar the sound level of the ringing bell will decrease until it can no longer be heard . this happens because air must be present in the jar in order for a) sound to be transferred b) electricity to flow through the wires c) the rubber to seal the jar d) the bell clanger to vibrate

Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx hurrim timed

Choose the most likely outcome of this scenario: jen decided to go bike riding without a helmet. while no one is around during her ride, she is thrown from her bike when her wheel goes into a pothole. she is not injured, but she is terrified to get back on her bike. what happens next? a. her physical health is affected even though she wasn't hurt. b. her mental and emotional health are affected because she is afraid to get back on her bike. c. her social health is affected because she is worried her friends saw the fall. d. her overall health is not affected at all by her fall.

If the ama of the inclined plane below is 2, calculate the ima and efficiency. ima = efficiency =