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You're taking a self portrait in the mirror using a camera. If you stand 5.7 m away from the mirror and you see your face in focus. A scale on the camera lens shows the distance form the camera that is in sharp focus. What distance will that scale show?
A 700 N car traveling at 25m/s.The breaks are applied suddenly and the car slides to a stop. The average breaking force between the tires and the road is 7100 N.How far will the car slide once the breaks are applied.
A major league pitcher can throw a baseball in excess of 42.9 m/s. If a ball is thrown horizontally at this speed, how much will it drop by time it reaches the catcher who is 18 m away from the point of release.
When the walkway exerts a load force of 9900 N on one of the support points, through what distance does the point move down?
A force of 13.3 N pulls horizontally on a 0.9 kg block that slides on a rough, horizontal surface, What is the acceleration of the blocks and What is the tension in the string
find the coefficient of kinetic friction between the slide and the child.
A meter long 1.0 cm diameter nichrome heater wire is associated to a 12V battery. What is the magnetic field strength 1.0 cm away from the wire.
A 7.5 nC charge is located 1.8m from a 4.2 nC charge. Find out the magnitude of the electrostatic force that one charge exerts on the other. Is the force attractive or repulsive.
A projectile is fired with an initial speed of 68.8 at an angle of 37.8 above the horizontal on a long flat firing range. Find out the maximum height reached by the projectile.
A toy train is pushed forward and released at xi = 1.60 m with a speed of 2.60 m/s. It rolls at a steady speed for 1.30 s, and then one wheel begins to stick. The train comes to a stop 6m from its starting point. What is the train's acceleration a..
During an initial stage of construction, the beam is not to be bolted to the wall, but to be held in place solely by friction. What is the least coefficient of friction between the beam and the wall for the beam to remain in static equilibrium.
What is the resulting compressional force on Earth. Two loudspeakers, A and B, are driven by the same amplifier and emit sinusoidal waves in phase.
You can launch the proton from the surface of a sphere of with charge Q and radius R, from the center of a ring of charge Q and radius R, or from the center of a disk of charge Q and radius R. Which is the best choice.
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