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A pendulum bob with a mass of 0.38 kg is attached to a 1.5 m long string as shown. As the pendulum bob swings from point A, where the angle ? = 36°, to point B at the bottom of its arc, determine the change in its gravitational potential energy.
A golfer tees off on level ground, giving the ball an initial speed of 38.5 m/s and an initial direction of 36.0° above the horizontal. (a) How far from the golfer does the ball land? (Neglect air resistance.)
A closed box is filled with dry ice at a temperature of ?78.4 °C, while the outside temperature is 22.8 °C. Find the thermal conductivity of the material from which the box is made
An imaginary accelerator consists of colliding beams of electrons and protons, each of 2TeV total energy. What laboratory energy would be required to achieve the same center - of - mass energy if electrons collide with stationary protons?
A uniform rod of length 0.790 m and mass 14.50 kg is balanced on a sharp edge at 0.650 m from the left end. At the left end hangs a mass of 45-kg and the right end hangs an unknown mass so that the whole assembly is in equilibrium.
A 6.4 cm diameter pipe gradually narrows to 4.0 cm. When water flows through this pipe at a certain rate, What is the volume rate of flow
A proton is suspended in a vacuum between two oppositely charged horizontal parallel plates. what is the charge of the larger sphere
A large capacitance of 1.20 mF is needed for a certain application. Calculate the volume of Teflon alone in the capacitor
A professor walks in a long hall carrying a vibrating 512Hz tuning fork. The end of the hall is closed so that sound reflects from it. The student hears 4 beats per second. How fast is the student walking and in what direction.
2 radio antennas are 100m apart along a north-south line. Theybroadcast identical radio waves at a frequency of3.0MHz, what is the phase difference between the waves at this point
At an outdoor market, a bunch of bananas is set into oscillatory motion with an amplitude of 20.0 cm on a spring with a force constant of 16.0 N/m. What is the weight of the bananas in newtons
A generator rotates at 88Hz in a magnetic field of 2.6×10?2T . It has 1200 turns and produces an rms voltage of 120V and an rms current of 57.0A, What is the area of each turn of the coil
Water at ground level is moving at a speed of 1.20 m/sec in a pipe at a pressure of 850 kPa. What is the pressure of the water on the fourth floor
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