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A hollow spherical shell has mass 7.85kgand radius 0.220m. It is initially at rest and then rotates about a stationary axis that lies along a diameter with a constant acceleration of 0.880rad/s2. What is the kinetic energy of the shell after it has turned through 7.00 rev ?
A 50g ball of clay traveling at speed v0 hits and sticks to a 1.0kg block sitting at rest on a frictionless surface. what os the speed of the brick after the collision
Two parallel plates of 0.5m high and 0.2m wide are a distance 0.25m apart. What is the Capacitance of the system. compute the Electric field
A molecule of DNA (deoxyribonucleic acid) is 2.07 µm long. The ends of the molecule become singly ionized: negative on one end, Determine the effective spring constant of the molecule
A race car starts from rest and drives as fast as possible over the"L" shaped course on the board. X=120m, R=35m. the car canaccelerate at a 9.0 m/s^2 under any condition (speeding up, slowingdown or turning). how long will it take to run the cour..
A converging lens of focal length 20 cm is placed between an object and a screen which are separated by 1.8 m. Where should the lens placed in order to form an image on the screen
the electric potential of the earth the earth has a vertical electric field with a magnitude of approximately 100 vm
In a physics lab experiment for the determination of moment of inertia, a team weighs an object and finds a mass of 2.98 kg. They then hang the object on a pivot located 0.163 m from the object\'s center of mass and set it swinging at a small ampl..
a uniform disk with radius r = 10.0 cm and mass 650 g attached to a uniform rod with length L = 640 mm and mass 300 g. Calculate the rotational inertia of the pendulum about the pivot point
A classic observation of refraction occurs when a pencil is placed in a glass half filled with water. Do this and observe the shape of the pencil when you look at the pencil sideways, that is, through air, glass, water. Explain your observations. ..
Humans can detect a difference in sound instensity levels of 1.0dB. What is the ratio (louder to softer) of the sound intensities
A block of mass 2.50 kilogram is pushed 2.40 meter along a frictionless horizontal table by a constant 16.0 Newton force directed 25.0 degree below the horizontal. Estimate the work done by the force of gravity
A ray of light is incident on glass-air interface at the critical angle of 41 deg., what is the refracted angle, What is the strength of a lens which forms an image 24 cm from the lens when the object is 40 cm away
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