a student is conducting experiments with a block of wood. in experiment 1, the student pulls the block of wood with a constant force of 10 N along a horizontal surface. in experiment 2, the student pulls the same block of wood with a constant force of 10 N. the type of surface is different from that used in experiment 1. which surface creates more friction with the wood block

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

Agas initially at p1 = 1 bar and occupying a volume of 0.5 liter is compressed within a piston–cylinder assembly to a final pressure p2 = 4 bar. (a) if the relationship between pressure and volume during the compression is pv = constant, determine the volume, in liters, at a pressure of 3 bar. (b) repeat for a linear pressure–volume relationship between the same end states. reference

Lacie kicks a football from ground level at a velocity of 13.9 m/s and at an angle of 25.0° to the ground. how long will the ball be in the air before it lands? how far will the football travel before it lands?