List three ways in which water reaches the atmosphere

Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?

The force it would take to accelerate an 900-kg car at the rate of 6m/s2

You can melt ice by applying pressure because the solid/liquid line has a slope.