PLEASE HELP DUE TODAY!! 1. A charged cup contains 69 electrons, Calculate the charge on the cup.
( charge of an electron is -1.6 x 10^-19 )
2. A charged particle has a charge of -9.2 x 10^-16 C. How many electrons are found in the
charged particle?
3. A charged ball has 27 protons. Calculate the charge on the ball.
4. There are 63 charged particles on the surface of a book. If the total charge on the book is
- 6.4 x10^-18 C, determine whether the charged particles on the surface of the book are
electrons or protons.
5. A charged particle contains 7000 protons. Calculate the total charge on the charged
particle.

This problem has been solved! see the answera non-uniform fire escape ladder is 6.0m long whenextended to the icy alley below. it is held at the top by africtionless pivot, and there is neglibible frictional force fromthe icy surface at the bottom. the ladder weighs 250n, and it'scenter of gravity is 2.0m along the ladder from the bottom. amother and child of total weight 750n are on the ladder 1.5m fromthe pivot. the ladder makes an angle θ with the horizontal.find the magnitude and direction ofa) the force exerted by the icy alley on the ladderb) the force exerted by the ladder on the pivotc) do your answers in part a and b depend on the angle?

John throws .4 kg ball with velocity of 18 m/s. hits .2 kg bottle and bottle flies 25 m/s. how fast is ball traveling after hitting the bottle?

Question 11 of 13 (1 point) jump to question: a stairway, ladder, or ramp must be present in excavations in which of the following situations? a. all trenches must have access/egress b. the trench is more than 15 feet wide but only 1 ½ feet deep c. the trench is more than 4 feet deep and the devices must be within 25 feet of all workers