0.210 moles of a diatomic gas are in a piston. The gas does 185 J of work while 390 J of heat are added. What is the change in temperature? (Be careful with + and - signs. +W = expansion, +Q = added, +AU = temp goes up) (Unit = C or K)

Aboat that travels with constant speed of 6.10 m/s in still water is to go directly across a river. the current in the river flows at 1.95 m/s. (a) at what angle must the boat be steered?

Next a skier is pulled by a tow rope up a frictionless ski slope that makes an angle of 15 with the horizontal. the rope moves parallel to the slope with a constant speed of 0.69 m/s. the force of the rope does 800 3 of work on the skier as the skier moves a distance of 8.4 m up the incline. (a) if the rope moved with a constant speed of 2.2 m/s how much work would the force of the rope do on the skier as the skler moved a distance of 8.4 m up the incline? at what rate is the force of the rope doing work on the skier when the rope moves with a speed of (b) 0.69 m/s and (c) 2.2 m/s?

1.what is where an object is located 2. what is how fast an objects speed is changing 3. what is how fast an object is moving