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A particular wire has a diameter of 1.7 mm and length of 1.3 m. If its resistance is 15 meter-Ohms, what is the resistivity of the metal from which it is made?
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Question: A parallel-plate air capacitor has a capacitance of 920 pF. The charge on each plate is 2.55 µC. (a) What is the potential difference between the plates? (b) If the charge is kept constant, what will be the po ...
Question: Your physics textbook is sliding to the right across the table. Identify all forces acting on the object: A) Weight, Kinetic friction B) Thrust; Kinetic friction C) Normal force ; Weight ; Kinetic friction ; D) ...
Question: A solenoid 4.00 cm in diameter and10.0 cm long has 500 turns and carries a current of 15.0 A. Calculate the magnetic flux through the circular cross-sectional area of the solenoid. The response must be typed, s ...
Question: The speed of sound in air at 20 C is 344m/s. (A) What is the wavelength of a sound wave with a frequency of 784 Hz, corresponding to the note G5on a piano? (B) How many milliseconds does each vibration take? (C ...
Question: A roller coaster car crosses the top of a circular loop-the-loop at twice the critical speed. What is the ratio of the car's apparent weight to its true weight? The response must be typed, single spaced, must b ...
Problem: Suppose a point charge produces a potential of -1.8 V at a distance of 1.1 mm. What is the charge, in coulumbs, of the point charge? The response must be typed, single spaced, must be in times new roman font (si ...
Question: You're the CEO of a courier company, and you decide to select an electric car for your fleet of vehicles. A particular car has a mass of 1500 kg and is powered by 26 12-V batteries connected in series, for a to ...
Question: Oxygen gas (O2) has a molar mass of about 32.0 g/mol, and hydrogen gas (H2) has a molar mass of about 2.00g/mol. Calculate (a) the rms speed of an oxygen molecule when the temperature is 300 K, and (b) the rms ...
Jimmy is trying to synchronize two clocks on the roof of two buildings. The master clock is located at (x,y,z)=(0m, 0m, 80m), the slave clock is located at ( 200m, 300m, 30m). When the master clock ticks at t=0 s, it pro ...
Question: A roller coaster car is going over the top of a 12-m-radius circular rise. At the top of the hill, the passengers "feel light," with an apparent weight only 60% of their true weight. How fast is the coaster mov ...
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