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Question: An atom of a particular isotope of cobalt has an atomic mass number of 59. The addition of two electrons would make this atom electrically neutral.
Question 1: What is the number of electrons?
Please show all work and clearly explain each steps to determine the number of electrons.
The escape speed from a distant planet is 46 km/s. If the acceleration of gravity on the planet surface is 14.0m/s2, Discuss is the radius of the planet?
An electric train operates on 740 V. What is its power consumption when the current flowing through the train's motor is 1,970 A
A uniform steel bar swings from a pivot at one end with a period of 1.8s. How long is the bar
A particle in the solar system is under the combined influence of the Sun's gravitational attraction and the radiation force due to the Sun's rays, Calculate this critical radius
An off-roader explores the open desert in her Hummer. First she drives 25 degrees west of north with a speed of 7.0km/h for 15 minutes, What is the direction and speed of travel on the final leg
A proton is shot at 5x10^7 m/s toward a gold atom, with a mass 197 times t hat of the proton and deflects it straight back with 80% of its initial speed. What is the recoil speed of the gold nucleus?
How did Marie and PierreCurie measure the radio activity of her pitchblende samples? How did she deduce that there must be unknown elements in the pitchblende – the ones she later found (Po and Ra)?
Determine the critical angle of incident of a PLASTIC if the ray entering at 62 degrees is refracted to 47 degrees
You want to use a lens with a focal length of 37.0cm to produce a real image of an object, with the image twice as long as the object itself. Where should the object be placed
when a wheel rotates about a fixed axis at a constant rate how do the following quantities change with the distance
How long would it take her to reach the bottom of the hill, assuming she starts from rest and accelerates uniformly, if the elevation change is 335m.
A dog and a sled are moving due east together with a velocity of 20m/s ( Vi= 20 m/s ). The dog (with a mass of 20 kg, or Md= 20kg) jumps off of the sled and travels 30 degrees north of east. The sled (with a mass of 5kg or Ms=5 kg) is now headed due ..
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