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1. What is the net charge on a Ca +3 ion?
2. What is the magnitude of the electric force between a proton and an electron in a hydrogen atom? Suppose they are point charges separated by 0.054 nm.
The energy of the first excited state of a hydrogen atom is -0.34 eV ± 0.0003 eV. What is the average lifetime of for this state
a car traveling 85 kmhr strikes a tree. the front end of the car compresses and the driver comes to a rest after
A potter's wheel is rotating around a vertical axis through itscenter at a frequency of 1.4 rev/s. What is the frequency ofthe wheel after the clay sticks to it
A 0.321 kilogram mass is attached to a spring with a force constant of 13.3 N/m. find what is its speed when it is 0.128 meter from equilibrium
What is the width of a single slit that produces its first minimum at 60.0° for 580 nm light, Using the slit from part (a), find the wavelength of light that has its first minimum at 62.5°
Find what is the magnitude of the least possible current that could theoretically exist
A .075 Kg toy rocket is launched straight up from the ground at 19 m/s. Calculate the power of gravity force during the first 10s
a microscope for viewing blood cells has an objective with a focal length of 0.50 cm and an eyepiece with a focal
A Capacitor and resistor are connected in series forming an RC circuit. If the resistance in the circuit is set at 700 OHMS, What amount of the charge is on the capacitor
an alien pilot of an intergalactic spaceship on a mission to measure the sizes of galaxies is traveling at 0.86c
One of the contests at the school carnival is to throw a spear at an underwater target lying flat on the bottom of a pool. The water is 1.2 m deep. At what angle below horizontal should you throw the spear in order to hit the target
Consider two masses ( treat as point masses) of mass m=1.5 kg and m=2.5 kg held together by a massless rod of length 2a=2.0 m and free to pivot at the center of the rod.
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