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A 75 kilogram man sits on a 3.7 kg chair. Each leg of the chair makes contact with the floor in a circle that is 1.3 centimeter in diameter. Obtain the pressure exerted on the floor by each leg of the chair assuming the weight is evenly distributed.
A 2500- Ferris wheel accelerates from rest to an angular speed of 0.21rad/sec in 14sec . Approximate the Ferris wheel as a circular disk with a radius of 30m. What is the net torque on tyhe wheel?
In a material having an index of refraction n , a light ray has frequency f, wavelength ?, and speed v. What is the frequency of this light in vacuum and in a material having refractive index n1
a person standing at the edge of a cliff throws a stone horizontally over the edge with a speed of vi 32.4 ms. the
You are given a sample of metal and asked to determine its specific heat. You weigh the sample and find that its weight is 25.5 N. What is the sample's specific heat
two masses m1 and m2 move in a plane and interact by potential energy U(r)=1/2kr^2. write down their Lagrangian in terms of the CM and relative position R and r, and find the equations of motion for the coordinates X,Y,x,y. Describe the motion and fi..
A spring with a spring constant of 500N/m is used to propel a .45kg mass up an inclined plane. find the speed of the mass as it reaches the top of the plane
You are asked to construct a capacitor having a capacitance near 1 nF and a breakdown potential in excess of 10,000 V. What is the breakdown potential of this capacitor
A simple pendulum is made up of a 2.0 kg mass suspended on a thin aluminum wire. Compute the length of the pendulum wire at the equator
A car starts from rest and moves around a circular, horizontal,level track of radius 30.0 m. Its speed increases at the constantrate of 0.500 m/s2. (a) What is the magnitude ofthe net acceleration 15.0 s later?
A solid cylinder (radius = 0.150 m, height = 0.120 m) has a mass of 6.90 kg. How much of the height of the cylinder is in the oil
A skater of mass 81.5 kg initially moves in a straight line at a speed of 4.70 m/s. what is the skater's final velocity
a rifle with a mass of 1.2kg fires a bullet with a mass of 6.0g (0.006kg). What is the momentum of the bullet after the rifle is fired
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