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physics
march 2020
13

Physics Questions and Answers March 13, 2020

Expert-verified solutions to help you succeed

Use the expression for the magnetic field of a loop to find an expression for the magnitude of the magnetic field at point P, a distance a/2 from the center of each coil Note that there is a total of 2N turns in the two coils.

Using appropriate technology, you determine that Earth's magnetic field at your location has a magnitude of 5.36 10 -5 T and is directed north at an angle of 59? below the horizontal. You charge a metallic projectile and fire it north with a speed of 641 m/s and at an angle of 14? above the horizontal. Determine the sign (+ or ?) and charge of

You toss a walnut at a speed of 15.0 m/s at an angle of 50.0 above the horizontal. The launch point is on the roof of a building that is 20.0 m above the ground. a) How long after it is launched does the walnut reach the ground? b) How far does the walnut travel horizontally from launch point to landing point? c) What are the horizontal and

Do all explosives require heat to detonate? I want a short answer that is a couple of sentences.

How do fire fighters/investigators know where to start investigating the cause of the fire? I want a short answer that is a couple of sentences

What pieces of information do fire fighters/ investigators consider when coming to a conclusion for the reason of a fire ? I want a direct short answer that is a couple of sentences

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