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A 280-kg crate is supported by several rope-and-pulley arrangements as shown. Determine for each arrangement the tension in the rope.
a system consisting entirely of electrons and protons has a net charge of 1.95 10-15 c and a net mass of 4.43 10-23 kg.
a a 171g sample of carbon from ancient wood is found to have an activity of 155.6 decaysmin. how many half lives have
A train whistle has a certain acoustic power. If the sound energy from the whistle spreads out spherically, determine what is the power of the whistle
The air inside a bicycle tire pump has 178 joules of work done on it as 98.5 joules of heat is conducted away from it. What is the change in internal energy of the air
The wave function for a wave on a taut string is given by y(x,t)=(0.350m) sin (10pi(t)-3pi(x)+pi/4), What is the energy contained in each cycle
A barge is 15.0 m wide and 75.0 m long and has vertical sides. What is the weight of the barge and its cargo
A certain parallel-plate capacitor is filled with a dielectric for which ? = 7.0. The area of each plate is 0.041 m2, and the plates are separated by 2.0 mm. The capacitor will fail (short out and burn up) if the electric field between the plates exc..
An rms voltage of 24.5V with a frequency of 1.50kHz is applied to a 0.365 microF capacitor. What is the rms in this circuit
A 275 ball is tied to a string. It is pulled to an angle of 4 and released to swing as a pendulum. A student with a stopwatch finds that 17 oscillations take 20.
A gas within a closed chamber undergoes the cycle shown in the p-V diagram of Fig. 18-37. The horizontal scale is set by Vs = 4m^3. Compute the net energy added to the system as heat during one complete cycle.
A sign for the local cheese shop is hung by two strings of length 0.25 meters at either end from a 4 meter long pole with a mass of 200 kg. what is the coefficient of static friction between the wall and the pole
A series R-L-C circuit is connected to a 150Hz ac source that has Vrms = 80.0V. What average power is delivered to the circuit by the source
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