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Question1
Assume a 67-kg boy and a 44-kg girl use a massless rope in a tug-of-war on an icy, resistance-free surface. If an acceleration of the girl toward the boy is 3.0 m/s2, find out the magnitude of an acceleration of the boy toward the girl.
Question2
The mailman brought Ralph's lead ball. The hinged 9m drawbridge to Ralph's house collapses as he is one meter from mailbox (attached to the end of a drawbridge). Cable is attached 7m horizontally from wall at an angle of 30 above the horizontal. Mass of mailbox with lead ball is 100kg. Weight of drawbridge (center of mass is 5m from wall) is 2000N, and Ralph has mass 25kg. What is a tension in the cable?
A steam catapult launches a jet aircraft from the aircraft carrier John C. Stennis, giving it a speed of 210 mi/h in 3.00 s. (a) Find the average acceleration of the plane. m/s2 (b) Assuming the acceleration is constant, find the distance the plan..
A 55.0 kg sailor jumps from a dock into a 100.0 kg rowboat at rest beside it. what is the velocity of the sailor
A duck flying horizontally due north at 14.8 m/s passes over Atlanta, What is the magnetic force acting on the duck
A screen 1.8 m wide is located 3.6 m from a pair of slits illuminated by 620 nm laser light, Find the highest-order bright fringe that will appear on the screen of the slit spacing is .20 mm
An AC power generator produces 46 A (rms) at 3600 V. The voltage is stepped up to 100000 V by an ideal transformer, and the energy is transmitted through a long-distance power line that has a resistance of 100 . What propotion of the power deliver..
An outfielder throws a 0.150 kg baseball at a speed of 39.6m/s and an initial angle of 34° What is the kinetic energy of the baseball at the highest point of its trajectory.
What is the magnetic field amplitude of an electromagnetic wave whose electric field amplitude is 15V/m
A beam of light is traveling in air and strikes a material. The angles of incidence and refraction are 58.8°, Obtain the speed of light in the material
A 13.0 k? resistor and a capacitor are connected in series and then a 12.0 V potential difference is suddenly applied across them. Calculate the time constant of the circuit
A man is racing with his son has half the kinetic energy of the son, who has half the mass of the father. What is the original speed of the Man
A slab of copper of thickness b = 6.944×10-1 mm is thrust into a parallel-plate capacitor of C = 7.00×10-11 F of gap d = 5.0 mm, How much work is done on the slab as it is inserted
Problem 12.30: Singing in the shower. We all sound like great singers in the shower, due to standing waves, What are the wavelengths of the first two overtones for this shower
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