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For a 120-V rms 60-Hz voltage, an rms current of 70 mA passing through the human body for 1.0?s could be lethal.
What must be the impedance of the body for this to occur?
To estimate the muzzle speed of a blow dart, fire dart straight up into the air and time how long it takes to come back down. Roughly half of that time is the time for object to decelerate from its initial velocity to motionless. Estimation the in..
determine average net force exerted in the barrel of cannon.
two infinite, parallel planes have excess charge densitites o and -2o, what are the magnitude and direction of the electic field between the planes
How far from the center of the earth must a person be to experience acceleration as the reason of gravity that is one half the acceleration at the surface.
the 25g bullet travelling at 350m/s strikes a block of wood. The block of wood exerts an average force of 50,000N opposing the motion of the bullet. How far does the bullet penetrate while stopping.
From then on, the wheel turns through an angle of 431 rad as it coasts to a stop at constant angular deceleration. Illustrate a t what time does the wheel stop?
he 5.0- block is pulled to the right with a force as shown in the figure . The coefficient of static friction between all surfaces is 0.55 and the kinetic coefficient is 0.3, illustrate what is the minimum value of needed to move the two blocks?
An airplane wishes to fly from new york to ottawa. from new york, ottawa is located 780km West23degreesNorth. there is a wind blowing from a bearing of 310 degrees and if the plane flies at 890km/h, what bearing should the pilot steer to fly direc..
A horizontal force a of magnitude 22 N is applied to a 3.25 kg psychology book, as book slides a distance d = 0.500 m up a frictionless ramp.
It takes only 9.12N of force to hold up a 1KG metal crown in water, Compute the specific gravity of this metal, and guess what element it might be using a density table
Imagine two 5.0 g bags of protons, one at the earth's north pole and the other at the south pole. Calculate the electrical repulsion that each bag exerts on the other.
A force vector has a magnitude of 595 newtons and points at an angle 39o of below the positive x axis. What is (a) x scalar component and (b) y scalar component of the vector.
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