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A steel piano wire 0.918 m long has a crosssectional area of 0.00856 cm2. When under a tension of 142 N, how much does it stretch? Young's modulus for the wire is 2 × 1011 N/m2. Answer in units of mm
What is the relationship between the appearance of the sample and the NTU value?
A capacitor is discharged when a wire is connected across its terminals, How much energy is released for a 1.00 uF capacitor with 10.0 V across its plates
A wheel 90.0 cm in diameter accelerates uniformly from 235 rpm to 385 rpm in 6s. How far will a point on the edge of the wheel have travelled in this time.
A U.S. penny has a diameter of 1.9000cm at 20.0 C . The coin is made of a metal alloy (mostly zinc) for which the coefficient of linear expansion is 2.6e-5 K^-1. What would its diameter be on a hot day in Death Valley
An electron is projected horizontally with a speed of 4 x 106 m/s at a 20-cm distant vertical screen. What is the magnitude of the vertical force on the electron needed to make the electron strike the screen 5 cm below its initial projection level?
an airtight box has a removable lid of area 1.34e-2 m2 and negligible weight. the box is taken up a mountain where the
What is the resolving power of the objective if it is used in an oil-immersion microscope with n oil = 1.45
Consider the combination of capacitors shown in the diagram are all with the same capacitance of 2.00 μF each What is the equivalent capacitance in μF?
A sample of helium behaves as an ideal gas as energy is addedby heat at constant pressure from 273K to 393 K. what is the mass of helium present
An object with a charge of -3.26 µC is located at (3.59 m, 4.23 m), and an object with a charge of 1.44 µC is located at (-2.64 m, 0). Find the electric potential (in kV) at the origin
A 9.4-V battery, a 5.08-? resistor, and a 9.9-H inductor are connected in series. After the current in the circuit has reached its maximum value, evaluate the power being supplied by the battery
A 770 kg car moving at 21 m/s brakes to a stop. The brakes contain about 15 kg of iron, which absorbs the energy. What is the increase in temperature of the brakes.
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