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An electron in a uniform electric field increases its speed from 2.3×10^7 m/s to 3.7×10^7 m/s over a distance of 1.8 cm. What is the electric field strength?
A goldfish lives in a 50-cm-diameter spherical fish bowl. The fish sees a cat watching it. how far from the edge does the fish see it as being
A sled rests at the top of a 25° slope 80 m in length. If ?k =.25, and the velocity at the bottom of the incline is 20 m/s, what is the weight of the sled
A ship's mast reaches to a height of 15 meters above the surface of a 10-meter-deep lake. how long will the shadow of the mast
A hanging wire made of an alloy of aluminum with diameter 0.12 cm is initially 2.8 m long. When a 40 kg mass is hung from it, the wire stretches an amount 1.57 cm. A mole of aluminum has a mass of 27 grams, and its density is 2.7 g/cm3.
An object moves with constant acceleration 3.55 m/s2 and over a time interval reaches a final velocity of 12.8 m/s. What is the distance it travels during this interval
In the Bohr model, the electron in H has a circular orbit. For an isolated atom, the only force on the electron is the strictly radial electrical force. Does this violates the uncertainty principle
A time-varying horizontal force F(t) = At4 + Bt2 acts for 0.500 s on a 12.25-kg object, starting at time t = 1.00 s. What impulse does this force impart to the object
Some pacemakers employ magnetic reed switches to enable doctors to change their mode of operation without surgery. What current must a wire carry if it is to produce a 5.02E-4 T field at a distance of 0.468 m
A package falls out of an airplane that is flying in astraight line at a constant altitude and speed. If you could ignorethe air resistane, what would be the path of the package asobserved by the pilot
q1. a 60 m ladder leans against a wall. what is the minimum force of friction essential to prevent the ladder from
question1a space station is in the shape of a hollow ring 450 in diameter. at how many revolutions per minute must it
A spring is resting vertically on a table. A small box is dropped onto the top of the spring and compresses it. What is the magnitude of the spring's displacement when the spring is fully compressed
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