To move a heavy couch across a carpeted living room, what could be used to
decrease the frictional force.
Check all that apply.
A. Push harder on the couch.
B. Attach wheels to the bottom of the couch so it rolls.
C. Lay smooth cardboard along the carpet to reduce the coefficient
of friction
O D. Have a friend sit on the couch.

0.09 moles of sodium sulfate in 12 ml of solution

One of the hopes for solving the world's energy problem is to make use of the fusion reaction 21h +31h --> 42he + 10n + energy how much energy is released when 1 mol of deuterium is fused with 1 mol of tritium according to the above reaction? the masses of the atoms and the neutrons are as follows: 21h = 2.0140 amu 31h = 3.01605 amu 42he = 4.002603 amu 10n = 1.008665 amu. the speed of light is 2.9979 x 108 m/s.

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.