A uniform, solid flywheel () of radius 1.4 m and mass 15 kg has an angular momentum of 60.0 . What is the magnitude of  its angular velocity ?

Suppose a train sounding its horn is moving at 30.0 m/s in still air on a day when the speed of sound is 350.0 m/s. As the train passes the platform, on which you stand (moving away from you), you hear it with a frequency of 180 Hz. Which frequency does an observer on the train hear?

A mass m = 7.0 kg is attached to a spring and allowed to hang in the Earth’s gravitational field. The spring stretches 4.4 cm before it reaches its equilibrium position (where the spring force balances gravity). If allowed to oscillate, what would be its period?

A soccer player kicks a 0.500kg ball from rest towards the opposing team’s net. The ball has a velocity of 25.0 m/s the instant after being kicked, and the player’s foot is in contact with the ball for 0.300 s. What is the average force exerted on the ball?

A soccer player kicks a 0.500kg ball from rest towards the opposing team’s net. The ball has a velocity of 24.0 m/s the instant after being kicked, and the player’s foot is in contact with the ball for 0.310 s. What is the average force exerted on the ball?

A mass m = 9.0 kg is attached to a spring and allowed to hang in the Earth’s gravitational field. The spring stretches 2.2 cm before it reaches its equilibrium position (where the spring force balances gravity). If allowed to oscillate, what would be its frequency?

A volume-cycled ventilator has a rate knob for setting the controlled frequency of breathing. If this control is set to 12/min, which of the following other settings will determine the inspiratory and expiratory times? 1. FIO22. Flow3. Volume

Which of the following devices is considered to be the first electrically powered negative pressure ventilator?

Which of the following is an example of acute ventilator failure?

The risk of barotrauma increases with the duration of positive pressure ventilation.