Your boss asks you to adjust the temperature so that a sound wave travels more quickly through the air. you increase the temperature from 30°c to 36°c.
what's the velocity of the sound wave at this new temperature?

a. 352.6 hz b. 350.0 hz c. 344.0 hz d. 335.6 hz

A) 352.6 m/s

Explanation:

As we know that velocity of sound in air at given temperature is given by the formula

here we know that

t = temperature in degree Celsius

now we know that temperature is 36 degree Celsius

so from above formula we have

so here the speed will be 352.6 m/s at given temperature T = 36 degree Celsius

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.

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