You have a 2.00 kg block of lead. lead melts at 327.5°c. cpb = 130.0 j/kg*c and △hj for lead is 2.04x10^4 j/kg . say you start at room temperature (25.0°c). how much heat must you transfer to melt all the lead?

According to newtons universal law of gravitation, which would change the parh of the ball so it traces out widest curved path possible?

What is the rate of 12 liters of water moving through a water hose in 4.0 minutes?

Consider a one meter long horizontal pipe with a constant 100 cm^2 cross sectional area. water flows rightward into the pipe at x = 0 with flow velocity 02m/sec at every point within the pipe intake area. at x=1, the rightward flow rate is 0.192 m/sec. assume the water is a conserved quantity in the pipe, so there must be a leak (a sink) somewhere in the pipe. 1. compute net volumetric flow of the source if the system to be in equilibrium. 2. now assume the pipe in the problem has no leaks. compute the net volumetric rate of change for the system.