12. a sample of ethylene glycol, used in car radiators, has a mass of 34.8 g. the car releases, 783 j of heat. the initial temperature of the sample is 22.1 0c. what is the final temperature? the specific heat capacity of ethylene glycol is 2.42 (j/g 0c)

Adiver in midair has an angular velocity of 6.0 rad/s and a moment of inertia of 1.2 kg·m2. he then pulls is arms and legs into a tuck position and his angular velocity increases to 12 rad/s. the net external torque acting on the diver is zero. what is his moment of inertia in the tuck position?

Atrain departs from its station at a constant acceleration of 5 m/s. what is the speed of the train at the end of 20s?

If vx = 7.00 units and vy = -7.60 units, determine the magnitude of v⃗ . determine the direction of v⃗ .