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A stick of mass m and length L is pivoted at an end. It is held horizontal and then released. It swings down, and when it is vertical the free end elastically collides with a ball. (Assume that the ball is initially held at rest and then released a split second before the strick strikes it.) If the stick loses half of its angular velocity during the collision, what is the mass of the ball? What is the speed of the ball right after the collision?
A car starts from rest and moves around a circular, horizontal,level track of radius 30.0 m. Its speed increases at the constantrate of 0.500 m/s2. (a) What is the magnitude ofthe net acceleration 15.0 s later?
An Indy car with a speed of 120km/h goes around a level, circular track with a radius of 1km. What is centripetal acceleration of the car.
A 200 kg body is pulled up an inclined plane 15 m long and 5 m high. The force required to pull the body up the plane at a slow uniform speed is 976 N. compute the ideal mechanical advantage, the actual mechanical advantage and the efficiency of t..
A stone tied to the end of a string is whirled around in avertical circle of radius R. Find the critical speed below which the spring would become slack at the highest point
A 38.0 kg child swings in a swing supported by two chains, each 3.04m long. The tension in each chain at the lowest point is 429N. Find out the child's speeds at the lowest point.
Most materials will expand when the temperature is increased. The change in size will depend on several factors, including the original size, What is the fractional change in length
The refractive indices of materials A and B have a ratio of nA/nB = 1.66. What is the speed of light in material B
A charge of +Q is located at the 0 mark of a meter stick whilea charge of +3Q is located at the 100 cm mark. Where is the net field equal to zero
for an rlc circuit with a resistance of 13.0 k? a capacitance of 7.0 microf and an inductance of 35.0 h. what frequency
the interfaces between the layers are parallel. the index of refraction of each layer is given in the drawing.
Blue light of wavelength 446nm passes through a diffraction grating with a slit spacing of 1.5×10 ?3mm and makes a diffraction pattern on the wall. How many bright fringes will be seen
A transformer has an input coil with Nin = 400 turns and Nout = 1050 turns. If the voltage across the input coil has an amplitude of 2.1 V, what is the voltage across the output circuit?
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