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Briefly describe: (a) Charging by friction (b) Charging by contact (c) Charging by induction *In one sentence if possible.
Light with a wavelength of 618 nm passes through a slit 7.52 wide and falls on a screen 1.88 m away. compute the linear distance on the screen from the central bright fringe to the first bright fringe above it.
What pull does each one exert if their resultant pull is 402-N straight upward.
The human body can survive a negative acceleration trauma incident (sudden stop) if the magnitude of acceleration is less than 250 m/s^2.
The electric field everywhere on the surface of a thin, spherical shell of radius 0.785 m is of magnitude 850 N/C and points radially toward the center of the sphere. (a) What is the net charge within the sphere's surface? Please show work.
A helicopter is ascending vertically with a speed of 5.98. At a height of 149 above the Earth, a package is dropped from a window. How long till the package hits ground.
A pendulum consists of a 4.98kg mass on the end of a 0.873 m string. The mass is pulled aside so the string makes an initial angle with the vertical of 12.5o. The mass is then released with initial speed of 2.10m/s upward and perpendicular to the rop..
At a dock, a crane lifts a 1200 kg container 30 m, swings it out over the deck of a frieghter, and lowers the container into the hold of the freighter, which is 10 m below the level of the dock. The acceleration of gravity is 9.8 m/s2. Neglect fri..
Carlos weighs 900N on the surface of the earth. How much would he weigh in the satellite circling earth at an altitude of 3200km? (The earth's radius is 6400 km)
The liquid level system shown in the below figure is initially at the steady state with the inlet flow rate at 1 cfm. Calculate the maximum & minimum values of the output.
On a workday the average decibel level of a busy street is 69 dB, with 102 cars passing a given point every minute. If the number of cars is condensed to 39 cars every minute on a weekend, what is the decibel level of street.
A projectile is fired at time t = 0.0 s, from point 0 at edge of a cliff, with initial velocity components of vix=30m/s and viy = 100m/s. The projectile rises, and then falls into the sea at point P. The time of flight of the projectile is 20s.
A toy airplane is tied to the ceiling with a string. When the airplane's motor is started, it moves with a constant speed of 1.03m/s in a horizontal circle. If the angle the string makes with the vertical is 27°, and the tension of the string is 1N.
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