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If the elastic limit of copper is 3.68 x108 N/m2, determine the minimum diameter a copper wire can have under a load of 42.2 kg if its elastic limit is not exceeded.
An AC generator has an output rms voltage of 94 V at a frequency of 76 Hz.find the inductive reactance and rms current
A 2.70 uF capacitor is charged to 80 uC and then placed in series with a 6.4 M ohms resistor and an open switch. What is the initial voltage across the capacitor
What is the temperature T of the Concorde's skin in flight?
A 40-kg pole vaulter running at 14 m/s vaults over the bar. Her speed while she is above the bar is 1m/s. Avoid air resistance, in addition to any energy absorbed by the pole, and determine her altitude as she crosses the bar.
To determine the location of her center of mass, a physics student lies on the lightweight plank supported by two scales 2.50 apart, as indicated . If left scale reads 300 , and right scale reads 122 .
A load of bricks with mass = 15.4 kg hangs from one end of a rope that passes over a small, frictionless pulley. What is the tension in the rope while the load is moving
A 0.11- kg block on a wooden table is given a sharp blow with a hammer. The block then slides across the table to a stop. How far does the block go
An ac generator producing 20 V (rms) at 200 rad/s is connected in series with a 50-%uF057 resistor, The rms voltage (in volts) across the capacitor is
a pelican flying along a horizontal path drops a fish from a height of 4.7 m. the fish travels 7.7 m horizontally
A) What are science misconceptions? What other names are used to refer to them? How are they formed? What difficulties do they present to the learning and understanding of science concepts?
In a liquid with a density of 1450kg/m3 , longitudinal waves with a frequency of 390Hz are found to have a wavelength of 7.50m
The wind exerts a force of 325N north on a sailboat, while the water exerts a force of 425 N west on the sailboat. Find out the magnitude and direction of the net force on sailboat.
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