To show that the effect of force depends upon the area of conduct, a student hold both ends of sharpening pencil between the index finger of both the handle and nresses it from both side. the finger which has a deeper mark of a pencil is a) on thumb of both hands
b) towards the flat end of the pencil
c) on firefinger on both their hands
d) towards the pointed end of the pencil

Which type of bond is found between the atoms of a molecule? a. metallic b. delocalized electron c. covalent d. ionic

Three different objects, all with different masses, are initially at rest at the bottom of a set of steps. each step is of uniform height . the mass of each object is a multiple of the base mass : object 1 has mass 4..00m , object 2 has mass 1..96m , and object 3 has mass . when the objects are at the bottom of the steps, define the total gravitational potential energy of the three-object system to be zero. if the objects are then relocated as shown, what is the new total potential energy of the system? each answer requires the numerical coefficient to an algebraic expression. each algebraic expression is given using some combination of the variables , , and , where is the acceleration due to gravity. enter only the numerical coefficient. (example: if the answer is 1..23mgd , just enter 1.23)

How does an observation about an object differ from an inference about that object