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A yo-yo is made of two solid cylindrical disks, each of mass 0.049kg and diameter 0.074m , joined by a (concentric) thin solid cylindrical hub of mass 0.0053kg and diameter 0.010m . Use conservation of energy to calculate the linear speed of the yo-yo when it reaches the end of its 0.90m long string, if it is released from rest in m/s. What fraction of its kinetic energy is rotational?
Light travels at a speed of about 3.0 10^8 m/s. How many miles does a pulse of light travel in a time interval of 0.1 s, which is about the blink of an eye
A horse is pulling a buggy. the total force by the horse is 475N applied horizontally. What is the force of friction on the driver and buggy
A drag racer starts from rest and accelerates for 12.3 s with a constant acceleration until it has travelled 400 m. What is the stopping distance for the drag racer
A beaker of mass 325 g is sitting on a table. The beaker is filled with 210 g of water. The beaker and water are initially in thermal equilibrium at 22 ?C, What is the specific heat of the beaker
three masses are located as follows: a 3.0 kg mass is at the origin, a 4.5 mass at (0.0m, 4.0m), what is the gravitational energy of the system of masses
A stone with a mass of 0.80 kg is attached to one end of a string 0.900 m long. The string would break if its tension exceeds 600-N.
You are 1.5 m tall and you are standing 2.0 m away from a flat mirror. The Top of the mirror is at the same level as the top of your head. How large is the mirror
A spherical mirror is to be used to form a real image of an object that is located 5 meters from the object. What type of mirror needs to be used
X-rays are scattered from a target at an angle of 78.0° with the direction of the incident beam. Find the wavelength shift of the scattered x-rays
The tension in a string is 20.6 n and its linear density is .649 kg/m. A wave on the string travels in the -x direction. It has amplitude of 3.71 cm and a frequency of 10.6 hz. What are the speed and wavelength of wave.
What is a typical neutron star density
A 111 gram apple falls from a branch that is 3.5 meters above the ground, How much time elapses before the apple hits the ground
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