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A charge of 18 nC is uniformly distributed along a straight rod of length 3.0 m that is bent into a circular arc with a radius of 2.5 m. What is the magnitude of the electric field at the center of curvature of the arc? please show work.
Two moles of an ideal gas are placed in a container whose volume is 9.1 multiply.gif 10-3 m3. What is the average translational kinetic energy of a molecule of the gas
If the torque required to loosen a nut on the wheel of a car has a magnitude of 33.1 N · m, what minimum force must be exerted by a mechanic
The magnetic field of the brain has been measured to be approximately 3.0 x 10^-12 T. Although the currents that cause this field are quite complicated, we can get a rough estimate of their size by modeling them as a single circular current loop 1..
Problem A small mirror is attached to a vertical wall, and it hangs a distance of 1.59 m above the floor. The mirror is facing due east, and a ray of sunlight strikes the mirror early in the morning and then again later in the morning.
A source emits sound of wavelength 2.54m an 2.74m in air. Use the speed of sound=343m/s. a) Write the equations of these two traveling waves in complex exponential notation as a function of wave speed and number.
The left end of a long glass rod is 8.00 cm in diameter, with an index of refraction of 1.60, is ground, Find the position of the image of the arrow formed by paraxial rays incident on the concave surface
In a series RCL circuit the dissipated power drops by a factor of 8.0 when the frequency of the generator is changed from the resonant frequency to a nonresonant frequency
A uniform cylinder of mass m=8.26 kg and radius R=0.147 m is released from rest on an inclined plane (theta=42.4 deg), What is the magnitude of the angular velocity just before the cylinder reaches the horizontal surface
a 10,000kg open rail car rolls under a hopper at 1m/s. the hopper dispenses grain into the moving rail car, how much grain was loaded into the car
A simple pendulum of length l and mass m is attached to a massless spring with elastic constant k. The attachment point moves only in a vertical direction. Obtain the Lagrange's equations of motion
a catcher catches a 145 g baseball traveling horizontally at 36.0 m/s. How large an impulse does the ball give to the catcher, what average force did the ball exert on the catcher
One kilogram of dry air is warmed from 273 K to 313 K under a constant pressure of 1000 hPa. Calculate (a) the heat absorbed by the gas, (b) the work done, and (c) the change in internal energy.
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