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A solar cell, 3.0cm square, has an output of 350mA at 0.80V when exposed to full sunlight. A solar panel that delivers close to 1.0 A of current with an emf of 120V to an external load is needed. How many cells do you need to build the panel? How big will the panel be? Draw a circuit to show how the cells should be assembled.
a bullet of mass 50 g traveling at 400 m/s due north strikes a rock of mass 500 g at rest and ricochets off the rock going due east. How much energy was lost in the collision
The plates of a parallel plate capacitor are separated by d = 2.8 cm. The potential of the negative plate is 0 V, and the potential halfway between the plates is +15 V. What is the electric field between plates (take the upward direction as the po..
A charged particle moves in a circle in a magnetic field. (a) Starting with the force relation, write the equation for the radius of the circle
What is the minimum area (in square meters) of the top surface an ice slab 0.251 m thick floating on fresh water that will hold up a 1060 kg automobile
If the blocks move determine the magnitude of their acceleration. If the blocks move determine the magnitude of the tension in the string. If the blocks do not move evaluate the sum of the magnitude of the forces of friction acting on the blocks...
A loudspeaker of mass 20.00 {rm kg} is suspended the distance of h = 2.40 {rm m} below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l = 3.50 {rm m}.
A 1-m-tall barrel is closed on top except for a thin pipe extending 4.2m up from the top. What is the pressure on the bottom when water is added to fill the pipe to its top
A ball leaves a table with an initial horizontal velocity of 2.4 m/s. The height of the table is adjustable. What is the horizontal distance between the two landing locations of the ball
q1. a 55 year old woman who is complaining of intermittent flushing itching and heartburn for several months. mega
A cyclotron for accelerating deutrons (A deuteron has one proton and one neutron ) has a magnetic field of .5 T and a radius of 1 m. What is the energy of the deuteron
How much energy is necessary to place three charges, each of 3.0 micro Coulomb's, at the corners of an equilateral triangle of side 2 cm.
two insulated charge cu spheres a and b of identical size have charge qa and -3qa when they are brought in contact with
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