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If you pass a comb through your hair and it acquires a charge of -0.1 μC, how many excess electrons does it carry? What conclusions can you reach by applying the law of conservation of charge to this situation?
Two buses depart from Chicago, one going to New York, and one to San Francisco.
Each bus travels at a speed of 30 m s -1 . Do they have equal velocities? Explain your answer.
THE FUNDAMENTAL FREQUENCY IF THE WIRE WERE HALF AS LONG, TWICE AS THICK AND UNDER
ONE-FOURTH THE TENSION
Given: f1 = 256 Hz
L1 = ½ L1
T2 = ¼ T1
Find: f2
A traveling wave on a rope is given by y(xt) = A cos [kx + (omega)t). A=0.0023 m, k = 6.98 rad/m, and omega = 742 rad/s. The length of the rope is 1.35 m and the mass of the rope is 3.38 g. What is the average power of the wave?
Lindsay is building a mobile to hang over her baby's crib. She hangs a 0.20kg toy sailboat 0.01m from the left end and a 0.015kg toy truck 0.20m from the right end of a bar 0.50m long. If the lever arm itself has negligible mass, where must the support string be placed so that the arm balances?
#339914 on Dec 2023