How many Joules of energy are required to change 10 gram of ice at -2 C to water at 20 C?

If a || b and e || f, what is the value of y ?

Often on a topographic map, every fifth contour line is darkened. what is this line called? a. key b. slope c. benchmark d. index contour

If a simple machine aduces the strength of a force, what must be increased? the speed of the input force the work the simple machine performs the size of the simple machine the distance over which the force is applied