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A wheel with a tire mounted on it rotates at the constant rate of 2.87 times a second. A tack is stuck in the tire at distance 37.3 cm from the rotation axis. Noting that for every rotation the tack travels one circumference, find the tack's tangential speed.
The A string of a violin is 32cm long between fixed points with a fundamental frequency of 440Hz and a mass per unit length of 6.5×10-4 kg/m. What is the wave speed in string.
the absolute portential at the exact center of a square is 3.0v when a charge of +Q is located at one of the squares corners. What is the absolute potential at the squares center
how much work is required to place q3 at (0,-3)? D) Calculate the electric potential energy of the group of three charges.
A performer, seated on a trapeze, is swinging back and forth with a period of 9.95 s. what will be the new period of the system
A 900- kg car collides with a 1300- kg car that was initially at rest at the origin of an x-y coordinate system. What was the initial direction
A blow-dryer and a vacuum cleaner each operate with a voltage of 120 V. Determine the ratio of the energy used by the blow-dryer in 17 minutes to the energy used by the vacuum cleaner in 46 minutes
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
The temperature of a gold bar rises by 10.0°C when it absorbs 0.677 kJ of energy by heat. Determine the specific heat of gold
A railroad car of mass 40900 kg moving at 3.35m/s collides and couples with two railroad cars,each of the same mass as the single car and moving in the same direction at 1.53m/s. what is the speed of three cars after the collision.
A glass fiber of index 1.50 is used to transmit light but is submerged in water of index 1.33. What is the critical angle for light to stay inside the optical fiber
Emilie's potter's wheel rotates with a constant 2.20rad/s2 angular acceleration. What was the angular velocity of the wheel at the beginning of the 3.30s interval
A helium-filled balloon contains n = 1.1 moles of helium atoms at room temperature and a pressure P = 2 ? Patm (twice atmospheric pressure). How many moles are in the balloon
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