Recent content by Physics8o8

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    A 5cm long, 30g lead bullet strikes a wall at 27°C and melts on the wa

    Homework Statement A 5cm long, 30g lead bullet strikes a wall at 27°C and melts on the wall without splatter. How fast was it going? What is the force on the wall? If the wall is made of 1kg of marble, what temperature will it reach? Homework Equations I don't know how to find the...
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    A 50cm wavelength EM wave in air has 50mW/m^2 of energy.

    Homework Statement A 50cm wavelength EM wave in air has 50mW/m^2 of energy. what is the frequency? what is the average E field? What is the B field strength? What would be the λ in water? Homework Equations I found the λ. How do I find it in water The Attempt at a Solution...
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    A 2cm diameter cylindrical solenoid of 10 loops and 20cm long

    Thank you ... \Phi=∫B*dA... This equation helped a lot.
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    A 2cm diameter cylindrical solenoid of 10 loops and 20cm long

    Homework Statement A 2cm diameter cylindrical solenoid of 10 loops and 20cm long is in a perpendicular magnetic field of 0.7Tesla directed away from you. The field increases to 2.7Tesla in 100ms. The loop has 8Ω. What is the EMF? What is the current? What is the magnetic field of the...
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