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A top is a toy that is made to spin on its pointed end by pullingon a string wrapped around the body of the top. The string has alength of 56 cm and is wound around thetop at a spot where its radius is 1.2 cm.The thickness of the string is negligible. The top is initially atrest. Someone pulls the free end of the string, thereby unwindingit and giving the top an angular acceleration of 15 rad/s2. What is the final angularvelocity of the top when the string is completely unwound?
The stoplight had just changed and a 1900kgCadillac had entered the intersection, heading north at 3.4m/s , How fast was the Volkswagen going just before the impact
a wire has a length of 6.52 times 10-2 m and is used to make a circular coil of one turn. there is a current of 4.31 a
A power station with an efficiency of 0.5 generates 10^8W of electric power and dissipates 1.00 x10^8 W of thermal energy to the cooling water that flows through it.
An explosive is fired from the ground at an angle of 53.1 degrees and a speed of 30 m/s. what is the speed of the explosive at the max height
When a beam of white light is incident (vertically) on a thin oil slick (n = 1.25) floating on water, What is the thickness of the oil slick
mary beth uses a torque feeler that consists of a meter stick held at the 0 cm end with a weight danglig from various positions along the stick. how much more torque is exerted when it is hung from the 75 cm mark
A 5?, 10?, and 15? resistor are connected in parallel and the combination connected in parallel to a 15 V battery with negligible resistance. What is the current through the battery
An inflated rubber balloon is rubbed with the wool cloth until an excess of 1.50 multiplied by 109 electrons is on the balloon. What is the magnitude of the charge on the balloon.
The spaceship Lilac, based on the Purple Planet, is 755 m long, as measured at rest. At what fraction of the speed of light is Lilac moving
Assume the helium-neon lasers commonly used in student physics laboratories have power outputs of 0.7 mW. Find the peak magnetic field strengt
A soft drink (mostly water) flows in a pipe at a beverage plant with a mass flow rate that would fill 220 0.355 - L cans per minute. At point 2 in the pipe, Find the mass flow rate
A mirror with a focal length of -10 cm is used to image an object15 cm away. What is the image distance and what type of imagewould this mirror produce. Draw a ray diagram as part of your answer.
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