Surface waves on water with wavelengths large compared to depth are described by the equatio
d^2h/dx^2 + d^2h/dy^2 = 1/gd . d^2h/dt^2
where g is the acceleration of gravity, d is the equilibrium depth of the water, and h(x, y,t) is the height of the wave above the surface is equilibrium position. what is the speed of traveling waves described by this equation?

The necleus of an atom is made up of what subatomic particles?

An engine undergoes a cycle as shown in the diagram. during a complete cycle the work done by the gas is 28.5×103 j and the energy transferred thermally out is 99.4×103 j. there are 1.5×1024 gas molecules and they have three active degrees of freedom. 6. (6 pts) during which process(es) is energy transferred thermally into the gas? a. 1→2 b. 2→3 c. 4→1 d. 1→2 and 4→1 e. none of the above

Your science teacher brings in a speaker to talk to your class about climate change. during the session, students ask a few questions. which questions are related to the current evidence on climate change