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Two straight wire-electrodes are placed, in parallel, across your index finger a distance 2.50 cm apart. The terminals of a battery, with a voltage of 8.20 V, are attached, one to each electrode. If an ammeter in series with the electrodes displays a current of 0.760 µA, what is the resistance of your skin?
The width of the contact of each wire with your skin is 1.10 cm and the thickness of the conducting layer of your skin is 0.023 mm.Assuming that these two dimensions define an area through which the current flows, calculate the resistivity of your skin.
Two cars have a head on collision. Both were traveling at 42m/s toward each other. Car A has a mass of 722 KG. Car B has a mass of 848KG. After impact, car A is moving backward at 2 m/s. What is car B's velocity after impact.
how far will the bullet penetrate the block of wood.
A 246 kg wooden raft floats on a lake. When a 80kg man stands on the raft, it sinks 4cm deeper into the water. When he steps off, the raft vibrates for a while.
A Norwich MCE student is involved in a crucial out of class experiment. He is in his dorm room 34 feet above an historic rock wall. Describe the final result and state any assumptions that you need to make. Would the final result be any different o..
A small sphere with mass 1.20 hangs by a thread between two large parallel vertical plates 5apart. The plates are insulating and have uniform surface charge densities and. The charge on the sphere is = 8.80×10-6.
A stand, string, a paper or plastic cup, a nail, a roll of paper towels or similar sized paper, coloured sand, or some other dry powdery product, and a ruler or measuring tape.
What is the stopping distance of the car, as measured from the point where the driver first notices the red light?
A mass of 0.5 kg is suspended from a spring, which stretches by 8 cm. The support from which the spring is suspended is set into sinusoidal motion. At what frequehcy would you expect resonant behavior?
A uniform board is leaning against a smooth vertical wall. The board is at an angle above the horizontal ground. The coefficient of static friction between the ground and the lower end of the board is 0.620.
An airplane needs to reach a velocity of 402km/h to take off. On a 2000 m runway, what is the minimum acceleration necessary for the plane to take flight.
A 36.4 kg child starting from rest slides down a water slide with the vertical height of 20.7 m. (Neglect friction.) What is the child's speed three-quarters of the way down.
A point charge q1 = +7e is fixed at the origin of a rectangular coordinate system, and a point charge q2 = -10e is fixed at x = 7.1 nm, y = 0.
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