In a waterfall, water falls 100 ft. Assume all the potential energy change increases its enthalpy (or internal energy, in this case they change by the same amount because this is an incompressible liquid). Assume the specific heat capacity for water is equal to 1.0008 Btu/(lbm·°F). Calculate the temperature rise of the water in °F. (6 points)

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 740 n/m. it is initially at rest on an inclined plane that is at an angle of theta= 26 with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is uk = 0.17. in the initial position, where the spring is compressed by a distance of d = 0.16 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. the block's initial mechanical energy is 9.472 j.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.

Suppose you hit your hand against the edge of table. using newton’s third law of motion why does my hand hurt? explain

Jaylen is a championship runner of the school's track team. during one of his trials, his speed was measured at 15.1 m/s. find jaylen's kinetic energy during that trial if his mass is 54.6 kg.