The peak intensity of radiation from a star named sigma is 2 x 10^6 mmkay. what is the average surface temperature of sigma rounded to the nearest whole number?

The position of a dragonfly that is flying parallel to the ground is given as a function of time by r⃗ =[2.90m+(0.0900m/s2)t2]i^− (0.0150m/s3)t3j^. a: at what value of t does the velocity vector of the insect make an angle of 34.0 degree clockwise from the x-axis? b: at the time calculated in part (a), what is the magnitude of the acceleration vector of the insect? c : at the time calculated in part (a), what is the direction of the acceleration vector of the insect?

Which feature of a heating curve indicates a change ofn state

Work = force × a. work b. energy c. distance d. momentum