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A large heavy disk is mounted to a table by a firm clamp. A string is wound about an axle on the wheel from which a 100g mass is suspended. The radius of the axle is 0.01m and the large wheel has a mass of 2kg. The noted acceleration is 0.25m/sec2. What is the radius of the large wheel?
When responding to sound, the human eardrum vibrates about its equilibrium position. Find the maximum acceleration of the eardrum
An archer shoots an arrow at a 78.0 m distant target, the bull's-eye of which is at same height as the release height of the arrow. At what angle must the arrow be released to hit the bull's-eye if its initial speed is 38.0 m/s
so hydrogen atoms have a thermal velocity of about 1000 m/s. How does the energy stored in the magnetic field compare with the kinetic energy in a given volume of space.
four point charges of magnitude 4.7 microc are at the corners of a square of side 3 m. a find the electrostatic
The activity of a radioactive source decreases by 5.2% in 28 hours. What is the half-life of this source
A small spinning asteroid is in a circular orbit around a star, much like the earth's motion around our sun. The asteroid has a surface area of 9.5 m2. calculate the equilibrium temperature of the asteroid
Compute your average velocity in the following two cases: (a) You walk 61.0 m at a speed of 2.26 m/s and then run 61.0 m at a speed of 3.38 m/s along a straight track. (b) You walk for 1.00 min at a speed of 2.26 m/s and then run for 1.85 min at 3..
a flower pot falls from the roof and passes in front of a window ofheight h as it falls to the ground to smash to
what are the main parameters of voltage source and their physical meaning . how can we determine the voltage source
A 747 with a wingspan of 60 m is flying across an area of the earth where the earth's magnetic field is 5 x 10 -4 T. how much potential difference is induced between the wing tips
A 0.76- air cart is attached to a spring and allowed to oscillate. If the displacement of the air cart from equilibrium is x= (10.0cm) cos [(2.00s^-1)t+ pi], Find the maximum force exerted on it by the spring
a copper penny has a mass of 3.1 g. being electrically neutral it contains equal amounts of positive and negative
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