Karma poured 8kg of hot water at 23°C to 2kg of hot water in a bucket and the final temperature was 37°C. What was the initial temperature of the hot water? Neglect the heat lost to the surrounding

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 790 n/m. it is initially at rest on an inclined plane that is at an angle of 28 degrees with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is k = 0.14. in the initial position, where the spring is compressed by a distance of a = 0.18 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. b) if the spring pushes the block up the incline, what distance, l, in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.

What is the magnitude of the resultant vector round your answer to the nearest tenth

The slope of a velocity time graph over any interval of time gives the during that interval