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Three identical train cars, coupled together, are rolling east at 1.6 m/s . A fourth car traveling east at 4.4 m/s catches up with the three and couples to make a four-car train. A moment later, the train cars hit a fifth car that was at rest on the tracks, and it couples to make a five-car train. What is the speed of the five-car train?
Using a ball that has unknown mass m. You plot your data in the form of f2 versus M/L, with f in rev/s,M in kg, and L in m. calculate the mass m of the ball
You look at the center of one face of a solid cube of glass on a line of sight that makes a 55° angle with the normal to the cube face. What minimum refractive index of the glass
Some light bulbs are connected in parallel to a 120 V source, Determine the largest number of bulbs, which can be used in this circuit without burning out the fuse
A 1.0mL syringe has an inner diameter of 6.0mm , a needle inner diameter of 0.29 mm , and a plunger pad diameter (where you place your finger) of 1.2 cm . A nurse uses the syringe to inject medicine into a patient whose blood pressure is 140/100mmHg...
Two billiard balls are initially traveling toward each other at speeds of 1.40 m/s for ball 1 and 4.35 m/s for ball 2. Find the final velocities of both balls
q1. a solenoid is formed by winding 26.9 m of insulated silver wire around a hollow cylinder. the turns are wound as
Work out the buoyant force due to the surrounding air on a man weighing 800 {rm N}. Imagine his average density is the same as that of water, and surrounding air temperature is 0 rm ^circ C.
When placed in a given uniform electric field, a proton develops an acceleration of 5.00 * 10^10 m/s^2 in the eastward direction. What acceleration will be developed by an electron when placed in the same electric field
Find the maximum altitude reached by the rocket.Find its total time of flight.
A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a frictionless, vertical axle, What is the mass of the wheel
Air is confined at atmospheric pressure (101.3 kPa) in a cylinder whose volume is 0.22 m3. Calculate the increase in internal energy of the air
A 4.20 kg sphere makes a perfectly inelastic collision with a second sphere that is initially at rest, What is the mass of the second sphere
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