What is the temperature, in degrees celsius, of a substance with a temperature of 49k?

_322ác

_224ác

224ác

322ác

Kelvin is just degrees Celsius + 273.15; subtracting 273.15 from 49 yields roughly -224 degrees Celsius, so that's you're answer.

Answer: it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.explanation:   we have equation of motion ,where s is the displacement, a is the acceleration, u is the initial velocity and t is the time taken.average velocity = displacement/ time taken.average velocity = 10.69 miles/hr = 10.69*1.6*1000/(60*60) = 4.75 m/s4.75 = s/ts = 4. 1we also have acceleration = 2.18 m/s², initial velocity = 0 m/sso it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.

The correct choice is c