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A blacksmith heats a horseshoe (.25 kg iron) to an average temperature of 700oC. After working it on an anvil, he plunges it into five gallon bucket of water (at20 oC). Assuming that minimal energy is lost by boiling the water, what is the final temperature of the water and horse shoe?
A series RLC circuit with L = 15 mH, C = 3.1 F, and R = 4.7 is driven by a generator with a maximum emf of 120 V and a variable angular frequency 8700. Find out phase angle (in degrees).
A long uniform rod which weighs 5.00*10power2 N leans against a smooth vertical wall. It leans by an angular of 60.0 degrees with respect to the horizontal floor. The rod is 1.5 meters long.
Imagine a very heavy cube of pure gold that is 1.23 m on a side. Approximate the atoms in this cube as little cubes, How far would the line stretch
Suppose that the electric potential outside a living cell is higher than that inside the cell by 0.069 V. How much work is done by the electric force
A 2.0 cm × 2.0 cm parallel-plate capacitor with a 2.0 mm spacing is charged to ±1.0 nC. What is each particle's speed as it reaches the plate
Calculate the direction of the average force on the ball during the contact . The magnitude of the average force is 4700N
what is the approximate value of the impulse applied to the two-object system due to forces exerted on the system by objects outside the system >> Fnet * delta_t = (vector form)
a friend passes by you in a spacecraft traveling at a high speed. he tells you that his craft is 20.0 m long and that
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 1.20 kg mass on a horizontal spring oscillates on a frictionless surface with a displacement as a function of time given by x(t) = 0.075cos
A box of books weighing 397 N is shoved across the floor by a force of 543 N exerted downward at an angle of 37 degrees below the horizontal.
A 115microF capacitor is connected to an ac generator with an rms voltage of 17.0V and a frequency of 150.0Hz .What is the rms current in this circuit?
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