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A solenoid contains 780 coils of very thin wire evenly wrapped over a length of 17.5cm . Each coil is 2.50cm in diameter.
a) If this solenoid carries a current of 7.40 A , what is the magnetic field at its center?
A box at rest has the shape of a cube 3.5m on a side. This box is loaded onto the flat floor of a spaceship, What is the volume of the box as we observe it
Find the moment of inertia of the plate for an axis that lies in the plane of the plate, passes through the center of the plate, and is perpendicular to the axis in part A
As a baseball is being caught, its speed goes from 36 to 0 m/s in about 0.009 s. Its mass is 0.145 kg. What is the size of the force acting on it
In a mass-spring system, the mass of the object is 80g and the spring constant is 200N/m. What is the period of oscillataions for this system
It takes the Earth 24 hours to make a complete rotation around its axis. What is the angular velocity of the Earth in rad/s
A cannon fires a cannon ball at 999.16 m/s in a straight line that passes directly over an observer's head. how far is the cannon from the observer
A certain ideal gas is kept at 350K in a container with a volume of 3 cubic meters. what is the average kinetic energy of the gas molecules
A baseball is confined between two thick walls a distance 0.5m apart. Calculate the zero point energy of the baseball
The electron in a hydrogen atom is in the first excited state, What is the quantum number n of the state into which the electron moves
q1. a 19 kg box slides 4.0 rm m down the frictionless ramp shown in the figure then collides with a spring whose
A bismuth target is struck by electrons, and x-rays are emitted, Estimate the M- to L-shell transitional energy for bismuth when an electron falls from the M shell to the L shell
A spaceship is launched from the Earth's surface with a speed v. The radius of the Earth is R. What will its speed be when it is very far from the Earth
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