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An insulating membrane separates conducting fluids inside and outside an unmyelinated axon, a type of nerve fiber. A certain unmyelated axon has a capacitance of 0.01 F per square metre of a surface area and is a cylinder 2.5 x 10^-6 m in radius and 0.1 m long.
A) Find the surface area and capacitance of the axon.
B) If the potential difference across the membrane is 0.09 V, how much electrical energy is stored in the axon?
A block of weight 36.1 N is hanging from a rope. The tension in the rope is 48.5 N, pulling upward on the block. What is the magnitude and direction of the acceleration of the block?
A 2.00 meter long, straight rod is 1.00 mm in diameter an is made of pure copper (specific gravity 8.93). What is the potential difference between the ends on the wire
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A large arm model was constructed with a free arm which weights 1 kg, an additional weight of 1 kg is supported by the arm at a distance of 12 cm from the pivot. What is the total torque of the resistance
A 1600 kg car is traveling along a straight road at 17 m/s. Two seconds later its speed is 24m/s. What is the magnitude of the net force on car during this time.
A gymnast is performing a floor routine. In a tumbling run she spins through the air, How much time does this maneuver take
A rocket is launched at an angle of 56.0° above the horizontal with an initial speed of 99 m/s. Find the maximum altitude reached by the rocket
The pulley is frictionless and of negligible mass. The coefficient of kinetic friction between mass 1 and teh ramp is 0.25. Evaluate the change in kinetic energy of the 50 kg block as it moves from a to b, a distance of 20 m
A playground carousel is free to rotate about its center on frictionless bearings, and air resistance is negligible. What is the person's mass
In space, an asteroid of mass 5,000 kg is hit by an object of mass 1000 kg and travelling at 1,000 m/s with respect to the asteroid. what will be the new speed of the asteroid
A cube of ice is taken from the freezer at -8.7 C and placed in a 111 g aluminum calorimeter filled with 315 g of water at room temperature of 20.0 C, What was the mass of the ice cube
A uniform rod of mass 3.30×10?2kg and length 0.360m rotates in a horizontal plane about a fixed axis through its center, What is the angular speed of the system at the instant when the rings reach the ends of the rod
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