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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?
A square loop of wire surrounds a solenoid. The side of the square is 0.1 m, while the radius of the solenoid is 0.025 m. What is the current flowing in the square loop
A train traveling at v0 = 28.0 m/s begins to brake by applying a velocity-dependent instantaneous acceleration a(v) = ? /(v+u) m/s^2, Determine the distance traveled by the train until it comes to a complete stop
Two resistors (connected in series with each other) and a 10 Vbattery are connected in a loop. The voltage drop across the firstresistor is 2 V. What is the voltage drop across the second resistor?
The Youngs Modulus for copper is 130 Gpa. What is the strain in the the copper wire under a stress of 120Mpa
Find the flux of the Earth's magnetic field of magnitude 5.00 x 10-5 T, through a square loop of area40.0 cm2 for the following. when the field is perpendicular to the plane of the loop. when the field makes a 30.0°angle with the normal to the plane ..
A box with a mass of 5 kg is lifted (without acceleration) through a height of 2 m to place it upon the shelf of a closet. What is the increase in potential energy of the box
An insulated Thermos contains 131 cm3 of hot coffee at 82 °C. You put a 12g ice cube at its melting point to cool the coffee. By how many degrees has the coffee cooled once the ice has melted and equilibrium is reached? Treat the coffee as though ..
An old Chrysler with mass 2300 kg is moving along a straight stretch of road at 89 km/h. How fast (in km/h) is the center of mass of the two cars moving
You have 34 tuning forks that oscillate at close but different frequencies. What are the (a) maximumand (b) minimum number of different beat frequencies you can produce by sounding the forks 2 at a time,depending on how the frequencies differ?
question a beaker containing 300ml of water at 20 clesius has a 150g piece of aluminum at 50 celsius placed in it. what
The number of radioactive nuclei in a particular sample decreases to one-eighth of the original amount in 21 days. What is the half-life of the these nuclei
You need to make a series ac circuit having a resonance angular frequency of 1550rad/s using a 142 ohm resistor, a 10. microF capacitor, and an inductor. What should be the inductance of the inductor
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