A student is explaining the forces pushing on a pencil sitting on a desk. What is the force that pushes a pencil up from where the desk it is sitting on?

Gravity

Rolling friction

Normal friction

Sliding friction

he . if i may ask what i your question exactly?

explanation:

explanation:

considering the bohr theory, the type of connection that requires the transfer the answer conuldn't be right

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg