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The current in an RL circuit is zero at time t = 0 and increases to 75% of its final value in 4.5 s. The time constant of this circuit is approximately
a.6.0 s
b.12 s
c.8.7 s
d.3.2 s
e.9.8 s
Estimate the terminal speed of a wooden sphere (density 0.830 g/cm3) falling through air, if its radius is 8.00 cm and its drag coefficient is 0.500
A battleship is using sonar (reflected underwater sound signals) to detect the presence of nearby submarines. How far away from the battleship is the submarine
A sky-diver jumps out of a plane and achives (terminal velocity) before opening his parachute.Explain what is meant by the term terminal velocity,why it occurs and what value of velocity a typical sky diver might experience.
find the net rate of radiation by a pot at 35.7°C that has been placed in a -23.9°C freezer. The pot's surface area is 0.111 m2 and its emissivity is 0.655.
A skater spins with her arms extended at a speed of 11 m/s. If she then whips her arms in to her body to form a circle with a radius of 0.4 m, what was the radius of the circle
A charge -Q is uniformly distributed along a circular arc of radius R beginning on the +y axis and ending on the -x axis. Find the electric potential at the origin
you are designing a process to store pressurized argon gas a monatomic gas. you start with 4 moles of argon at a
A diffraction grating has 4272 lines/cm. Calculate the width of the dark area between the first and second order spectra on a screen 3.3 m away
determine the speed of the ball after the ball. A positive charge q is fired by a small hole in the positive plate of a capacitor.
A typical coal-fired plant generates 1000 MegaWatts of usable power at an overall thermal efficiency of 35%, What is the rate of heat input to the plant
The boiling point of water at 1 atm is 373 K. What is the volume occupied by water gas due to evaporation of 12 g of liquid water at 1 atm and 373 K
A 7650kg iceberg with density 931 kg/m3 is afloat in seawater with density 1030 kg/m3. find the buoyant force on the iceberg
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