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A horizontal boom 8 ft long is attached to a wall at its inner end and is supported at its outer end by a cable that makes an angle 30° with the boom. The boom weighs 60 lb, and a load of 500 lb is attached to its outer end. Find the (a) tension T in the cable and (b) the compression force F in the boom.
Assuming that vertical = 0 degrees, the angle of the pendulum oscillates between the maximum amplitudes: -theta max and theta max. What is the angle of the pendulum at which the gravitational potential energy is minimum
There are four charges, each with a magnitude of 1.8 μC.Two are positive and two are negative. The charges are fixedat corners of a 0.25 m square, one to a corner, in such a way thatthe net force on any charge is directed toward the center of thes..
A nurse applies a force of 4.30 Newton to the piston of a syringe. The piston has an area of 5.47 x 10-5 m2. Find the pressure increase in the fluid within the syringe
An echelette or blazed grating has 450 lines per centimeter and is ruled for the concentration of infrared light of wavelength 5.0 µm in the second order, find the angle of the ruled faces to the plane of the grating
A 78 kg circus performer jumps from a 4.20 m height onto a trampoline and stretches it downward 0.3m. suppose that the trampoline obeys Hooke's law.
A bat at rest sends out ultrasonic sound waves at 52.3 kHz and receives them returned from an object moving directly away from it at 29.7 m/s. What is the received sound frequency
A 30 k? resistor has a current of 63 mA passing through it. Determine the voltage drop across the resistor
at the 18th green of the u. s. open you need to make a 20.5ft putt to win the tournament. when you hit the ball giving
An inductor is connected to a 17kHz oscillator. The peak current is 60mA when the rms voltage is 5.6V. What is the value of the inductance L
During takeoff, an airplane climbs with a speed of 160 m/s at an angle of 24 degrees above the horizontal. How fast is the shadow of the plane moving along the ground
four identical metallic objects carry the following charges 2.2 microc 5.4 microc -3.4 microc and -8.8 microc. the
The resistance and the magnitude of the current depend on the path that the current takes. Find the resistance and the current in each case
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