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A and B went to rock climbing. A and B used similar length rope but Arope is more elastic,which stretches a bit. B has static rope,which doesn't stretch,and is not recommended for safety purpose in procliming. after climbing to the top of bulding1700, A steps off the roof and falls freely about 3.0m and then therope stops him over a distace of 1.2m.
a) draw a free body diagram of A as he reaches the point wherehis rope starts to stretch.b) assuming the rope provides a relatively constant force overthat distance,estimate the force A feels from the rope.c) simialrly of B.
A low-voltage device like an electric bell obtains its electricity from a 120 V source, but requires only 4–8 V. Thus,it requires a small transformer. This often takes the form of an autotransformer, which has only one winding around a single core..
two speakers are placed side by side and driven by the same frequency of 500 hz. if the distance from a person to one
A jogger accelerates from rest to 5.87 m/s in 3.53 s. A car accelerates from 21.3 to 34.7 m/s also in 3.53 s. (a) Find the magnitude of the acceleration of the jogger. (b) Find out the magnitude of the acceleration of the car. (c) How much further..
q1. a spring with spring constant 12.5 hangs from the ceiling. a 400 ball is attached to spring and allowed to come to
the drawing shows a type of flow meter that can be used to measure the speed of blood in situations when a blood vessel
air becomes a conductor if the electric field across it exceeds 3.0times 106vm. what is the maximum charge that can be
find out the speed of the test charge. How many electrons should be removed from A and put onto B to make the electrostatic force that acts on each object an attractive force whose magnitude is 23.6 N.
A system performs 352 J of work on its surroundings while losing 133 J of internal energy. Determine the heat transferred to the system during this process
a brick layer applies a force of 100 n to each of two handles of a wheelbarrow. its mass is 20kg and it is loaded with
An inductor (L=500 mH), a capacitor (C=4.00 uF), and a resistor (R=600 O) are connected in series. Calculate the required maximum voltage
A 318 mL container holds 0.146 g of Ne and an unknown amount of Ar at 35°C and a total pressure of 624 mmHg. compute the moles of Ar present.
When the lights of an automobile are switched on, an ammeter in series with them reads 9.90 A and a voltmeter connected across them reads 11.80 V. what is the emf of the battery
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