Sound travels slower in colder air than it does in warmer air. why does the speed of sound depend on air temperature?

The weights of bags filled by a machine are normally distributed with a standard deviation of 0.05 kilograms and a mean that can be set by the operator. at what level should the mean weight be set if it required that only 1% of the bags weigh less than 9.5 kilograms? round the answer to 2 decimal places.

2. which of the following devices is associated with the reception of radio signals? o a. demodulator o b. transmitting antenna o c. oscillator o d. microphone

Suppose you hit your hand against the edge of table. using newton’s third law of motion why does my hand hurt? explain