A 200 kg boulder is 1000 m above the ground, what is the potential energy when it is 1000 m above the ground ?

1.what is where an object is located 2. what is how fast an objects speed is changing 3. what is how fast an object is moving

Two charged particles, q1 and q2, are located on the x-axis, with q1 at the origin and q2 initially at x1 = 12.2 mm. in this configuration, q1 exerts a repulsive force of 2.62 µn on q2. particle q2 is then moved to x2 = 18.0 mm. what is the force (magnitude and direction) that q2 exerts on q1 at this new location? (give the magnitude in µn.)

Which form of pure carbon is so hard that it can be used in cutting tools?