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A neuron is stimulated with an electric pulse. The actionpotential is detected at a point 3.4 cm down the axon, .0052slater. When the action potential is detected 7.20cm from the pointof stimulation, the time required is .00635s. What is the speed of the electric pulse along the axon? Why are two measurements neededinstead of one?
A sound wave with an intensity level of 80.9 dB is incident on an eardrum of area 6.00 10-5 m2. How much energy is absorbed by the eardrum in 3.0 minutes
A rifle is aimed horizontally at a target 58 away. The bullet hits the target 2.5 below the aim point. What was the bullet's flight time? What was the bullet's speed as it left the barrel?
Find the equivalent resistance of two resistors connected in parallel if one is 0.5 ohm and the other 0.33 ohm, what current will flow through the 10-ohm resistor
find out the magnitude of the gravitational force exerted.
Suppose a particle with mass m is released from rest in a uniform gravity g, write down the relativistic equation of motion and find an expression that gives the relationship between velocity and time
An infinite nonconducting sheet has a surface chargedensity σ = 0.10µC/m2 on one side. How far apart areequipotential surfaces whose potentials differ by 147 V?
Two tiny spheres have the same mass and carry charges of the same magnitude. The mass of each sphere is 5.04 10-6 kg. Determine the charge magnitude
strikes the wooden block of a ballistic pendulum, as shown. The block has a mass of 270 g. Find out the speed of the bullet/block combination immediately after the collision.
The system is balanced by a support that is 0.300m from the left end of the plank. How far to the right of the support is the plank's center of gravity.
You have a wire of length L = 1.9 m for making a square coil of a dc motor. The current in the coil is I = 1.6 A, Find the maximum torque exerted on the coil
A dentist uses a small mirror of radius 45 mm to locate a cavity in a patient's tooth. If the mirror is concave and is held 14 mm from the tooth, what is the magnification of the resulting image.
Suppose that a billiard ball approaches a rail at a speed of 15 m/s and an angle od 60 degrees but rebounds at a speed of 10 m/s and an angle of 50 degrees. What is the change in momentum now
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