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The atomic mass of 5626Fe is 55.934939 u, and the atomic mass of 5627Co is 55.939847 u.
How much kinetic energy will the products of the decay have?
14 electrons are placed on a metal sphere. if the potential of the sphere is -38 V, what is the radius?
A gas expands while 502 J of energy is added to it as heat. The expanding gas does 422 J of work on its surroundings.
A 2.0cm×2.0cm×6.0cm block floats in water with its long axis vertical. The length of the block above water is 1.0cm
A 15kg crate is moved along a horizontal floor by pulling on it with a rope that makes a 30 degree angle with the horizontal, How much work is done by the normal force and frictional force, What is the net work
A piece of string 5.30 m long has a mass of 14 g. What must the tension in the string be to make the wavelength of a 128 Hz wave 120 cm.
Your dog is running around the grass in your back yard. He undergoes successive displacements 3.37 m south, 8.45 m northeast, and 13.3 m west. What is the resultant displacement?
A factory worker pushes horizontally to the right on a 250 N crate with a force of P = 75.0 N on a horizontal rough floor. A 135 N crate rests on top of the one being pushed and moves along with it. Call the bottom crate {rm A} and the top crate {..
assume that the mass moves in a circle at constant speed, and that the string makes an angle theta = 20° with the vertical. How long does it take the mass to create one complete revolution.
A parallel-plate capacitor has square plates that are 6.00cm on each side and 4.20mm apart. If the potential difference between the plates is 78.0V , how much electrical energy is stored in the capacitor
The velocity of a ball changes from m/s to m/s in 0.02 s, due to the gravitational attraction of the Earth and to air resistance. What is the rate of change of momentum of the ball
A parallel-plate capacitor has an area of 5.15 cm2, and the plates are separated by 1.05 mm with air between them. It stores a charge of 337pC. What is the potential difference across plates of the capacitor.
A faulty model rocket moves in the xy-plane (the positive y-direction is vertically upward), What is the horizontal displacement of the rocket when it returns to y=0
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