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Place your coins on a sheet of paper and draw a circle around them-the smallest possible circle that will fit all the coins. Then divide the circle into three parts as shown in Figure 15.26. This circle represents a star with a changing temperature. The coins represent H- ions. Removing a coin from the circle means that the H- ion has turned into a neutral hydrogen atom. Placing a coin in the circle means that the neutral hydrogen atom has become an H- ion.Place all the coins back on the circle.How many "H- ions" are now in the star?
A 0.100g plastic bead is charged by the addition of 1 x10^10 excess electrons (i.e. so the bead becomes negatively charged). What electric field (magnitude and direction) will cause the bead to hang suspended in the air?
calculate the speed of an electron that is accelerated through the same potential difference, and Calculate the speed of a proton
A 8 g handball moving with a speed of 14m/s strikes a wall at an angle of 48 degrees with the horizontal and then bounces off with the same speed at the same angle. it is in contact with the wall for 6.7ms. What is the magnitude of average force e..
A diver springs upward with an initial speed of 1.9 m/s from a 4.0-m board. What is the highest point he reaches above the water
Draw the decision tree for this problem, and solve it. What should the investor do?
The average Nascar race car weighs 3,400 lbs. At a recentNascar race the cars went flying around the banked curves atDaytona International Raceway. What is the centripetal force on the car keeping it goingaround the curve at a speed of 200 mph
The nucleus of a 125Xe atom (an isotope of the element xenon with mass 125 u) is 6.0 fm in diameter. It has 54 protons and charge q =+54e. What is the electric force on a proton
A cylindrical eraser of negligible mass is dragged across a paper at a constant velocity to the right by its pencil. The coefficient of kinetic friction between eraser and paper is 0.640. The pencil pushes down with 3.80N. Determine the shear modu..
A 1300kg car drives around a flat 190m diameter circular track at 30 m/s. What is the magnitude and direction of net force on the car.
An object is moving along a straight line and the uncertainty in its position is 0.7 m. Discover the minimum uncertainty in the momentum of the object.
for a science experiment you need to electroplate zinc onto both sides of a very thin 1.00 rm cm times 1.00 rm cm
I am rising upward in a hot air balloon. I am holding my coffee container and i accidentally let go of it when I am leaning out and enjoying the view. Whats the greatst height the container achieved in its flight
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