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A string is wound around a uniform disc of radius 0.65 m and mass of 2.2 kg. The disc is released from rest with the string vertical and its top end tied to a fixed support. Calculate the speed of the center of mass when, after starting from rest, the center of the mass has fallen 3 m. The accleration of gravity is 9.8 m/s^2. Answer in units of m/s.
Evangelista Torricelli was the first to put forward the idea that we live at the bottom of an ocean of air. (i) Given the value of the atmospheric pressure at the surface of the Earth.
A retired bank president can easily read the fine print of thefinancial page when the newspaper is held no closer than at arm'slength, What should be the focal length of an eye glass lens
A right triangle has a hypotenuse of length 17 cm and a leg of length 15 cm. What is the length of the other leg
A 77.0 kg man floats in fresh water with 3.00% of his volume above water when his lungs are empty, Calculate the volume of air he inhales--called his lung capacity--in liters
An uncharged capacitor and a resistor are connected in series to a source of emf. If emf = 6.00 V, C = 16.0 µF, and R = 100 ?, find the maximum charge on the capacitor
A typical compact disc stores information in tiny pits on the disc's surface. What's the frequency of electromagnetic waves that have a wavelength equal to the typical CD pit size
To see that it is easy to break a thighbone when falling in this fashion, find out the greatest distance through which his center of gravity can fall without his breaking a bone.
for safety reasons the speed of a child at the bottom of playground slide cannot exceed 6.0 m/s. What is the maximum height of the slide
A 10.0-m long string is moved up and down with simple harmonic motion with a frequency of 33 Hz. Determine the velocity of the wave on the sting
A dissecting microscope is designed to have a large distance between the object and the objective lens. What is the angular magnification
a 500g cart moving to the right with a speed of 30cms collides with a stationary 1500g cart. immediately after the
A high-speed flywheel in a motor is spinning at 450rpm when a power failure suddenly occurs. The flywheel has mass 40.0kg and diameter 80.0cm. At what rate is the flywheel spinning when the power comes back on
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