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In a television picture tube, electrons strike the screen after being accelerated from rest through a potential difference of 33 500 V. The speeds of the electrons are quite large, and for accurate calculations of the speeds, the effects of special relativity must be taken into account. Ignoring such effects, find the electron speed just before the electron strikes the screen.
A hoop and a disk, both of 0.48- m radius and 3.0- kg mass, are released from the top of an inclined plane 3.3 m high and 8.3 m long. What is the speed of the hoop
What is the focal length of a meniscus lens that has a convex surface of radius 32 cm and a concave surface of radius -16 cm
A thermos contains 165 cm3 of coffee at 85° C. To cool the coffee, you drop two 14-g ice cubes into the thermos. The ice cubes are at first at 0° C and melt completely. What is the final temperature of coffee? Treat the coffee as if it were water.
Some human nerve cells have a long, thin cylindrical cable (the axon) from their inputs to their outputs. Determine the resistance of the fluid in this axon
Water has a mass per mole of 18.0 g/mol, and each water molecule (H2O) has 10 electrons. How many electrons are there in 4.95 liters of water
A dragster accelerates to a speed of 100 m/s over a distance of 398 m. Determine the acceleration (assume uniform) of the dragster
Two cars are travelling on a dirt road between 3 consecutive poles after 5.40s they are side by side at next telephone pole. The distance between the poles is 66.30m.
Water moves through a constricted pipe in steady, ideal flow. At the lower point the pressure is 1.75 105 Pa and the pipe radius is 2.60 cm, Find the speed of flow in the lower section
Object A is metallic and electrically neutral, Object B is identical to object A and is also electrically neutral, It is charged by induction so that it acquires a charge of +3.18E-6 C
A 90 uF capacitor and a 15m H inductor are in series with a 185 O resistor, What is the resonant frequency
A 2.0cm×2.0cm×6.0cm block floats in water with its long axis vertical. The length of the block above water is 1.0cm
A model rocket is launched straight upward. Its altitude y as a function of time is given by y = bt -ct2, where b = 82 m/s, c = 4.9 m/s2, t is the time in seconds, and y is in meters, (a) make use of differentiation to find out a general expressio..
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