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A 69kg person sits on a 3.8kg chair. Each leg of the chairmakes contact with the floor in a circle that is 1.1cm indiameter. Find the pressure exerted on the floor by each legof the chair, assuming the weight is evenly distributed.
Two railroad freight cars with masses 130 (Mg) and 170 (Mg) approach with equal speeds of 0.330 (m/s). What fraction of the original kinetic energy was lost in this inelastic collision
the cordinate of a particles in meters is given by x(t) = 32t-t^3 where time in seconds. what is the velocity as function of time
will true moment of inertia of the dumbell system be larger or smaller than I=2MR^2M suggests? if Rm where to double by how much would the moment of inertia change
The velocity of the wave traveling on a string is higher if you increase the length of the string (keeping the kind of string, and the tension of the string, unchanged)
Suppose you need to rotate the plane of polarization of a plane-polarized beam of light by 90 degrees and produce only a 10% loss in intensity, Find the angle between the successive polarizers
Since the period of a simple pendulum depends only on its length (and g), How long would that standard be, in meters
In a certain region, the earth's magnetic field has a magnitude of 4.8 x 10-5 T and is directed north at an angle of 66° below the horizontal. Determine the bullet's electric charge
An electric field exerts a force of 3.00 x 10 -4 N on a positive test charge of 7.50 x 10 -4 C. Find the magnitude of the field at the charge location
A homogeneous disk of radius R and mass M rolls without slipping on a horizontal surface and is attracted to a point a distance d below the plane. find the frequency of oscillations around the position of equilibrium
A 5.4ft -ft-tall girl stands on level ground. The sun is 30? above the horizon. How long is her shadow
A Porsche 944 Turbo has a rated engine power of 217hp . 30% of the power is lost in the drive train, and 70% reaches the wheels. What is the maximum acceleration of the Porsche on a concrete surface where
The Earth is showered with particles from space known as muons. What will be the radius of the muon's resulting orbit
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