Afaraday ice pail similar to the one you will use in the experiment is used in this question. the principle of its operation relies on the proportionality between the charge on the inner pail and the potential difference between the inner pail and ground. suppose the relationship between charge � and potential difference � is given by � = � ∙ 2.90 ×10gj^.when a blue wand and a white wand are inserted into the ice pail at the same time without the wands touching, the electrometer reading was +74.6 . when only the white wand was removed, the electrometer reading changed to −25.0 . (a) how much charge resides on the blue wand? (b) how much charge resides on the white wand? (c) when the two wands are held 4.75 �� apart, what is the magnitude of the force exerted on either wand, assuming each wand is considered a point charge? is the force attractive or repulsive? (d) if the charge of one electron is −1.60 × 10gjc�, how many electrons are on the blue wand? assume that no leakage of charge occurs and that the charge on the pail is the same as the charge on the wand recall that j ^_`a = 9.00×10c ��e �e.

10 newton object is placed 3 meters from the fulcrum. at what distance on the other side would you need to place a 15 newton object to balance the lever? show your work!

Fill in the blanks with the numbers is a measure of the resistance to flow. a high liquid has a high resistance to flow and flows slowly. the ancients thought everything in the world was made of 4 we now know that there are 94 naturally occurring and scientists have created another 24 i am certain they will create even more. honey flows slowly because it has a high to flowing. a can be separated by physical means because it contains more than one pure substance and 2 pure substances are not chemically bonded to each other. a cannot be separated by physical means. all matter is made up of all elements are with the same number of protons. if it is just a single or many bonded together, if all of them have the same number of protons, it is an element. in a piece of pure iron metal, all the are joined together, that piece of iron metal is called elemental iron. a single of iron is called elemental iron. a mixture has differences from place to place. we might need a microscope to see them or they might be obvious to the unaided eye. there are surfaces separating it into different phases. a mixture is the same everywhere. it is uniform. there are no surfaces separating it into different phases. if different kinds of atoms (different elements) are bonded together by their electrons, it is called a there are physical means of to isolate the different pure substances in a mixture and there are chemical means of to isolate the different elements in a compound. 1. element 2. compound 3. mixture 4. heterogeneous 5. homogeneous 6. pure substance 7. atoms 8. separation 9. viscosity 10. resistance

Abumper car with a mass of 250 kg is traveling at a speed of 4 m/s. this bumper car collides and sticks to a second bumper car with a mass of 250 kg, which is initially at rest. what is the final speed of these two bumper cars after the collision, assuming they remain stuck together?