The experiment you did in lab is repeated, using a uniform metal bar that is 80.0 cm long instead of the meterstick. since the bar is uniform, its center of gravity is at its center. the new experiment uses different hooks for hanging the masses from the bar, with mhook = 5.0 g. as in the experiment you did in lab, x1 = 5.00 cm, m1 = 300.0 g, and xp = 25.0 cm. in the new experiment, you make the same measurements as in your lab and plot x versus 1 m2 + mhook . the line that is the best fit to your data has slope 2800 cm · g. what is the mass of the bar?

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Two technicians are discussing a resistance measurement between the can-h and can-l wires. technician a says this measurement should be done with the ignition switch in the "run" position. technician b states that a measurement of 0 ohms indicates an open in the network. which technician is correct?

An isolated conducting spherical shell carries a positive charge. part a which statement (or statements) about the electric field and the electric potential inside and outside the spherical shell is correct? which statement (or statements) about the electric field and the electric potential inside and outside the spherical shell is correct? electric potential inside the shell is constant and outside the shell is changing as 1/r2 both the electric potential and the electric field does change with r inside and outside the spherical shell electric potential inside and outside the shell is constant, but not zero electric potential inside the shell is constant and outside the shell is equal to zero electric field inside and outside the shell is constant (does not change with the position r), but is not equal to zero electric field inside and outside the shell is changing as 1/r (where r is the distance from the center of the sphere) electric field inside is equal to zero and outside the shell is constant, but not zero electric potential inside the shell is constant and outside the shell is changing as 1/r electric field inside and outside the shell is changing as 1/r2 electric field inside is equal to zero and outside the shell is changing as 1/r2 electric field inside and outside the shell is zero electric field inside is constant and outside the shell is changing as 1/r