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A horizontal rod of length L = 8.69 m is attached to an axel in such a way that the axel is located at its left end. Three forces are acting on the rod: F1 = 15.2 N at the location 6.28 m from the axel, F2 = 15.8 N at the location 2.28 m from the axel, and F3 = 19.9 N at the location 6.41 m from the axel. F1 (pointing up and to the right) makes an angle of 33.2 degrees with the rod, F2 (pointing up and to the left) makes an angle of 44.7 with the rod, and F3 points directly downward. Calculate the net torque that these three forces exert on the rod. Pay attention to +/-!
How much sound power will strike the eardrum of an airport worker 15.3 m from the aircraft? (Use 1.9 10-2 m as the diameter of the ear.)
An energy-efficient lightbulb, taking in 24.0 W of power, can produce the same level of brightness as a conventional lightbulb operating at power 100 W. The lifetime of the energy-efficient bulb is 10 000 h and its purchase price is $4.20, whereas..
q1. a wave on a slinky has a frequency of 1.69 hz. it takes 4.1 s to travel the length of the slinky 0.29 m. what is
A stone with a mass of 0.900 kilogram is attached to one end of a string 0.600 meter long. The string will break if its tension exceeds 65.0 Newton. Determine the maximum speed the stone can attain
Find an action to decrease the rise time of pulses passing through an amplifier.
An object is in free fall and at some point above the ground it has 35 Joules of kinetic energy and 27 Joules of potential energy if the ground
block A (mass 2.28 kg) rests on a tabletop. It is connected by a horizontal cord passing over a light, frictionless pulley to a hanging block B (mass 2.57 kg ), evaluate the tension in the cord
A 1200 kg boat is traveling at 80 km/h when its engine is shut off. The magnitude of the frictional force fk between boat, Find the time required for the boat to slow down to 40 km/h
A coil of inductance 78.8 mH and unknown resistance and a 0.66μF capacitor are connected in series with an alternating emfof frequency 910 Hz. what is the resistance of the coil
compute the cost per day of operating a lamp that draws a current of 2.20 a from a 110 v line. assume the cost of
An ac generator with a frequency of 150Hz and an rms voltage of 22.5V is connected in series with a 15.0kilo ohms resistor and a 0.210microF capacitor. What is the rms current in this circuit?
A 0.401 kg bead can slide on a curved wire, If the wire is frictionless and the bead is released with an initial speed of 12.8 m/s in the forward direction then find the speed of the bead at B
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