Which temperature would be most comfortable for a classroom? O A. 75K O B. 373 K C. 100°F. D. 20°C SUBMIT

Explain vector addition, triangle method and parallelogram method

Carbon is allowed to diffuse through a steel plate 15 mm thick. the concentrations of carbon at the two faces are 0.65 and 0.30 kg c/m^3 fe, which are maintained constant. if the preexponential and activation energy are 6.2 x 10-7 m2 /s and 80,000 j/mol, respectively, compute the temperature at which the diffusion flux is 1.43 x 10^-9 kg/m^2 -s.

Will mark as brainliest how does a catapult increase the trajectory of an object? ps. answer as if u were a 5th grader