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a tennis ball of mass o.022 kg is moving at 3.1 m/s at anangle of 222 degrees to the horizontal. it is struck by a tennisracket which exerts a force on it of 73t - 442t 2 N. for one tenth of a second at an angle of 32degrees to thehorizontal. find the final velocity of the tennis ball. (expressyour answer using i and j unit vectors)
A string is stretched to a length of 19.6 cm and both ends are ?xed. If the density of the string is 0.045 g/cm, and its tension is 1080 N, what is the fundamental frequency
A carbon steel piano wire 1.4 m long with a cross-sectional area of 2 × 10?6 m2 and mass 0.1 kg is stretched 23 mm. Determine the speed of transverse waves on the string. For carbon steel, Young’s modulus is 2 × 1011 N/m2.
q1. an airplane is flying with a velocity of 60.0 at an angle of 22.0 above the horizontal. when the plane is a
Two small spheres hang in equilibrium at the bottom ends of threads, 40.0 cm long, Find the distance between the centers of the spheres
A device draws 6.000 kW of power when connected to the 12.0-V output of a step down transformer. Calculate the output voltage of the generator
An airplane must reach a speed of 377mi/h in order to take off. If the runway is 403 m long, what is the minimum value of the acceleration that will allow the airplane to take off successfully.
Two long parallel wires are separated by 3.2 mm. The current flowing in one of the wires is twice that in the other wire. what are the values of the two currents
A spherical asteroid has a radius of 545 km and a surface g of 3.0 m/s2. What is the mass of the asteroid, What is the potential energy of a 1 kg object on the surface
In order to pass a physical fitness test, Marcella must run 1000 m at an average speed of 3.90 m/s. How much time does she have to run the last 750 m
A rod is measured to be 12cm by an observer moving at 0.60c with respect to the length of the rod. What is the proper length of the rod
A 1200 kg car is pulling a 500 kg triler along level ground. Friction is negligible. What is the magnitude of the force exerted by the car on the trailer
An air-core solenoid is attached to a 6 V battery via a switch. The switch is closed, what is the resistance and inductance of the coil
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