A piece of highway maintenance equipment hooked to a trailer exerts a pulling force of 3.50 x 10^3N over distance of 1.50 km. If the tractor's power output is 35.0 kW, how long does it take to do the work?

Give one example to show that when substances are mixed, it may result in a chemical or a physical change depending on the conditions.

10 points! will mark brainiest! in a heat engine if 1,000 j of heat enters the system and the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2,000 j 1: write the equation 2: list out your known variables 3: plug the numbers into the equations 4: solve 5: write your solution statement that includes initial energy and final energy added you so much!

An object with initial temperature 130 ∘ f is submerged in large tank of water whose temperature is 50 ∘ f . find a formula for f ( t ) , the temperature of the object after t minutes, if the cooling constant is k = − 0.2 . remember newton's law of cooling (the rate of change of temperature with respect to time is equal to k times the difference between the temperature of the object and the surrounding temperature) ! : )