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Find what are the factors that affect the resistance of an electrical conductor?
If the diameter and length of a wire conductor were both doubled, would the resistance be the same? explain.
A person with a weight of 273.6 lb stands on two feet with their weight equally distributed between the two shoes, What is the pressure on each shoe independently
Two friends, Al and Jo, have a combined mass of 164kg. At the ice skating rink, they stand close together on skates, at rest and facing each other.
catching a wave a 71 kg surfer starts with a speed of 1.3 ms drops through a height of 1.95 m and ends with a speed of
The nucleus of a 125Xe atom (an isotope of the element xenon with mass 125 u) is 6.0 fm in diameter. It has 54 protons and charge q =+54e. What is the proton's acceleration
(a) Calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 12.0 g. Silver has 47 electrons per atom, and its molar mass is 107.87 g/mole. (b) Imagine adding electrons to the pin until the negative charge h..
assuming each quadrant of the pizza to be the same find the center of mass of the uneaten pizza above the axis that is
After an eye examination, you put some eyedrops on your sensitive eyes. The cornea (the front part of the eye) has an index of refraction of 1.38, What is the minimum thickness of the film of eyedrops on your cornea
A steel ball with radius 1 cm is rolling along a table with speed 20.00 cm/sec when it starts to roll up an incline. How high above the table level would it rise before stopping.
A rod is measured to be exactly 19.80 cm long using a steel ruler at a temperature of 21.1°C. What is the coefficient of thermal expansion for the material of which the rod is made
A sinusoidal traveling water wave has a wavelength of 25 cm and a frequency of 0.60 Hz. What is the phase speed of this wave
A 11.2 kg object oscillates at the end of a vertical spring that has a spring constant of 1.90 104 N/m. Calculate the frequency of the dampened oscillation
The rocket above has an exhaust gas velocity of 2723 m/s and a burn rate of 5149 kg/s. If it has a mass of 1,000,000 kg what is its initial acceleration to two decimal places?
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