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Q. The speed of a sound in a container of hydrogen is 201K is 1220m/s. what would be the speed of sound if the temperature were raised to 405K? assume that hydrogen behaves like an ideal gas.

Q. Suppose a car is traveling at 12.0 m/s and the driver sees a traffic light turn red. After 0.510 s has elapsed (the reaction time), the driver applies the brakes, and the car decelerates at 6.20 m/s2. What is the stopping distance of the car as measured from the point where the driver first notices the red light?

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