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Problem: When a potential difference of 12 V is applied to a wire 7.0m long and 0.32mm in diameter the result is an electric current of 2.0 A.
Part A: What is the resistivity of the wire?
Please provide step to find the resistivity of the wire.
Three balls (m= 0.450 kg) are placed at evenly spaced intervals on a 0.75 m rod (m= .250 kg). Find the moment of inertia of the entire system
A 10 uF capacitor carries an initial charge of 80 uC. If a resistance of 25 omega is connected across it, what is the initial current in the resistor
A disk with radius R has uniform surface charge density. (a) By regarding the disk as a series of thin concentric rings, calculate the electric potential V at a point on the disk's axis a distance x from the center of the disk.
A 206 kg cart runs into the rear end of a 102 kg cart that is stationary. What is the speed of the moving cart before the collision
A small light source is placed in the very center of the bottom of a bucket of water. The light from the source shines upwards. You might assume the index of refraction of water is 1.33.
Each of the six real batteries in the figure has an emf of 21.5 Vand a resistance of 4.10 Ω. The external resistor hasresistance R = 3.59 Ω. At what rate does each battery transfer energy to its internal thermal energy?
An amplifier supplies 5.0 Watts to a perfectly efficient loudspeaker at one end of a 10.0 cm diamter tube filled with air. What is the intensity of the sound at the other end of the tube
A horizontal spring-mass system has low friction, spring stiffness 225 N/m, and mass 0.2 kg. The system is released with an initial compression of the spring of 8 cm and an initial speed of the mass of 3 m/s.
A variable force of the form F=3x2 + 2x + 5 N acts on a 2 kg object as it moves from x = 2 m to x = 3 m. How much work is done by this force
If 4.25e-4 Joule of work is required to move 12.2e-6 C of charge from one point to another, compute the electric potential difference between two points
One object is at rest, and another is moving. The two collide ina one-dimensional, completely inelastic collision. In other words,they stick together after the collision and move off with a commonvelocity. Momentum is conserved.
The pressure of a helium gas cylinder is 29.7 atm. After several balloons have been blown up the pressure is decreased to 5.68 atm. Obtain what fraction of the original gas remains
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