How much heat would it take to melt 2000 kg of snow that started at -10 degrees Celsius? specific heat of snow is 2100 J/kgC
heat of fusion is 3.34 x 10^5 J/kg
treat this a two questions:
one to heat the snow to its melting point, the other to melt the ice
an explanation would be appreciated :)
if you answer bs for points ill report and cry >:/

In what direction does the medium move relative to the direction of the wave? explain.

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2

Astudent throws a water balloon with speed v0 from a height h = 1.76 m at an angle θ = 21° above the horizontal toward a target on the ground. the target is located a horizontal distance d = 9.5 m from the student’s feet. assume that the balloon moves without air resistance. use a cartesian coordinate system with the origin at the balloon's initial position. (a) what is the position vector, rtarge t, that originates from the balloon's original position and terminates at the target? put this in terms of h and d, and represent it as a vector using i and j. (b) in terms of the variables in the problem, determine the time, t, after the launch it takes the balloon to reach the target. your answer should not include h. (c) create an expression for the balloon's vertical position as a function of time, y(t), in terms of t, vo, g, and θ. (d) determine the magnitude of the balloon's initial velocity, v0, in meters per second, by eliminating t from the previous two expressions.