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Take element Z = 70 from the periodic table. Ionize it 69 times so that there is only one electron left orbiting around the nucleus. What is the ground state energy of the electron?-6.67×104 eV**need help on 2nd partWhat is the energy of the electron when it is in the n = 20 principal state in the ion above
When at rest, two trains have sirens that emit a frequency of 300 Hz. The trains travel toward one another and toward an observer stationed between them. What is the speed of the second train
A bedroom bureau with a mass of 40 kg, including drawers and clothing, rests on the horizontal floor. What is the static friction force on the bureau initially
When the starter motor on a car is engaged, there is a 330A current in the wires between the battery and the motor, What minimum diameter can the wires have if the voltage drop along the wires is to be less than 0.45V
what is the power lost by a transmission line (made of Al) carrying 10 kA of current? By what percentage would the power loss change if the transmission line was switched to Cu
The current in a 120-V reading lamp is 2.5 A. If the cost of electrical energy is $0.090 per kilowatt-hour, how much does it cost to operate the light for an hour
Name the ionic compound form when an Magnesium reacts with chlorine.
A uniform plank of length 4.7 m and weight 221 N rests horizontally on two supports, with 1.1 m of plank hanging over the right support. To what distance x can a person who weighs 440 N walk on the overhanging part of the plank before it just begi..
A sinusoidal wave travels along a stretched string. A particle on the string has a maximum velocity of 0.800m/s, What is the amplitude of the wave
An inflated basketball has a gauge pressure of 9.0lb/in2. What is the actual pressure inside the ball
An alpha particle (the nucleus of a helium atom formed by 2 protons and 2 neutrons with charge q = +2(1.6 x 10-19 C), Calculate the acceleration of the alpha particle
The earth orbits the sun once per year at the distance of 1.50 x 1011 m. Venus orbits the sun at a distance of 1.08 x 1011 m. How long (in earth days) does it take for Venus to make one orbit around the sun
Two identical 1.50 kg masses are pressed against opposite ends of a light spring of force constant 1.75 N/cm , Find the Speed of each mass when it has moved free of the spring on a frictionless horizontal table
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