Nagine you are repeatedly lifting a weight into the air up to a height of 2 m. Assuming in each litt you exerted an average force of 190 N, how much work is done on the weight?
A. 150J
C. 300J
B. 200J
D. 380 J

9. Which of the following statements below best describes that work is being done?
A. The applied force does not make the object move.
B. The object moves perpendicular to the applied force.
C. The object moves in the same direction of the applied force.
D. The object moves opposite to the direction of the applied force.

10. The relationship between work and energy is
C. Inversely proportional
D. None of the above
A. Not related
B. Directly proportional

Please help

The allotropes of carbon include a variety of structures that include three-dimensional tetrahedral lattices, planes of hexagonal rings, cylindrical tubes of hexagonal rings, and spheres of five- and six-membered rings. similar shapes of network covalent atomic solids are possible with carbon nitride, boron, and pure silicon (e.g., silicene is a graphene-like allotrope of pure silicon). in contrast, silicates exist as either highly ordered or amorphous (more random) three-dimensional lattices. what could explain why there are there no naturally occurring sheets, stacked sheets, cylindrical tubes, or spheres of network covalent atomic solids composed of silicon and oxygen (sio2)? would pure silicate structures make good lubricants or good electrical conductors?