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The mass of the ball is 1.65 kg, and the mass of the block is 2.27 kg. The length of the wire is 1.23 m. What is the algebraic expression for the speed of the ball just before the collision with the block? Express your answer in terms of the length L of the wire and the magnitude g of the acceleration due to gravity.
the velocity of a boat with respect to the water is 4.0 m/s at an angle of 30.0 degrees North of West. find the velocity of the boat with respect to the ground
John and Joan walk in opposite directions around a circular path, starting from the same point. How long will it take for them to meet
A 54 {rm kg} ice skater spins about a vertical axis through her body with her arms horizontally outstretched, making 2.5 turns each second. The distance from one hand to other is 1.5 {rm m}. Biometric measurements indicate that each hand typically..
IP A uniform electric field of magnitude 6 times 10^3 ;{rm{N/C}} points upward. An empty, closed shoe box has a top and bottom that are 37 cm by 28 cm, vertical ends that are 28 cm by 21cm, and vertical sides that are 21 cm by 37 cm.
A model rocket launches with initial net upward accelration 1.5g (g is 9.8), This accelaration is maintained for 3 seconds. At what time does the rocket reach its maximum height
q1. a water-skier is moving at a speed of 14.7 ms. while she skis in the same direction as a travelling wave she
Communications satellites are placed in a circular orbit where they stay directly over a fixed point on the equator as the earth rotates. find the speed of a satellite in geosynchronous orbit
Write down the original position of the system
A 83-kg skater sliding due southeast at an initial speed of 2.0 m/s runs into a snow bank, What is change in the kinetic energy of the skater
An LRC series circuit with R = 100 Omega, L = 56mH, and C =1.7 muF is powered by an ac voltage source of peak voltage V0 = 210 V, Determine the phase angle of the source voltage relative to the current
Find out the acceleration of the crate if the applied force is 380 , the mass of the crate is 32 and the coefficient of kinetic friction is 0.42.
A semi truck is stopped across a road. As a driver approaches at 20 m/s he sounds the horn of his car (f=350 Hz). find the frequency of the horn heard by the truck driver
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