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Stainless-steel poles were arranged by an artist for the purpose of producing an enhanced display of lightning in a field of nearly one square mile. The magnetic field in New Mexico, where the rods are located, dips 64.0° below the horizontal and has a horizontal component of magnitude 2.5 x 10-5 T. Calculate the magnetic force on one of these poles, 6.09 m long, when it transmits an upward current of 2.16 x 104 A during a lightning discharge.
A certain lightbulb is rated at 175.0 W when operating at an rms voltage of 120 V. What is the peak voltage applied across the bulb
q1. a proton moves perpendicular to a uniform magnetic field b at 1.6 multiplied by 107 ms and experiences an
during a nascar race a car goes 50 ms around a curved section of the track that has a radius of 250 m. what is the cars
A flat cylindrical grinding wheel is spinning at 2000 rpm (clockwise when viewed head-on) when its power is suddenly turned off. Normally, How much work was done by friction on the system
A rigid vessel contains ammonia as liquid and vapor in equilibrium at 8 bar with a quality of 0.02. The mass of liquid ammonia is 1000 kg. How much volume does the liquid ammonia occupy
Two pieces of the same wire have the same length. From one piece, asquare coil containing a single loop is made. From the other, acircular coil containing a single loop is made. The coils carry different currents.
What is the minimum soap-film thickness (n = 1.33) in air that will produce constructive interference in reflection for red (? = 644nm ) light
A 4.0-m-long iron bar of uniform cross section is held perpendicular to the wall by a wire from the end of the bar to the wall. what is the magnitude of the vertical component of force produced by the wall
A 0.2kg rock attachedd to a horizontal springg of spring constant k=200N/m is placed on a horizontal, frictionless surface. what is the amplitude of motion for the rock
You are given a wooden rod 70 cm long and asked to drill a small diameter hole in it so that when pivoted about the the hole the period of the pendulum will be a minimum. How far from the center should you drill the hole
A commuting student leaves home and drives to school at an average speed of 41.0 km/h. What is the average velocity for the entire trip
A projectile is right at the edge of a 85 meter tall building . it is then fired with an initial speed of 25m/s at an angle 25 degrees above the horizontal and lands on the ground. how long will the projectile be in the air
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