Asystem undergoes a two-step process. in the first step, the internal energy of the system increases by 222 j when 150 j of work is done on the system. in the second step, the internal energy of the system increases by 123 j when 195 j of work is done on the system. for the overall process, find the heat.

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?

By what factor does the drag force on a car increase as it goes from 65 to 110 km/h?

Contains chemical energy. a. heat b. light c. natural gas