Please tell me how to solve Rubik's Cube in your way. And how do you solve 3x3x3 cube fast?
(I just watch a documentary on Netflix, named 'The Speed Cubers', and a guy named Max Park solve it in 6 seconds)

Keneila is attempting to ski down a 20 m high friction free hill for the first time. she has a speed 10 m/s at the top. what is her kinetic energy when she is a the bottom, 20 m ? (a)2500 j (b)9800 j (c)12300 j (d)3100j (e)15000j

1. explain how you calculate the net force in any direction on the box. 2. suppose an upward force of 15n is added to the box. what will be the net vertical force on the box? 3. what force could be applied to the box to make the net force in the horizontal direction zero? explain. 4. suppose a force of 25n to the right is added to the box. what will be the net force to the right?

Which model displays the change in a gas when the temperature of the gaseous system decreases?