Aheat engine has a thermal efficiency of 45%. how much power does the engine produce when heat is transferred into it at a rate of 109 kj/hr?

Initially, a particle is moving at 5.33 m/s at an angle of 37.9° above the horizontal. two seconds later, its velocity is 6.11 m/s at an angle of 54.2° below the horizontal. what was the particle's average acceleration during these 2.00 seconds in the x-direction (enter first) and the y-direction?

Which type of bond is found between the atoms of a molecule? a. metallic b. delocalized electron c. covalent d. ionic

In a system, when potential energy decreases, then entropy also decreases. true false